diff --git a/package-lock.json b/package-lock.json
index 58440bb..fb2639d 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,7 +17,7 @@
         "clsx": "^2.1.1",
         "i18next": "^25.8.0",
         "i18next-browser-languagedetector": "^8.2.0",
-        "i18next-http-backend": "^3.0.2",
+        "i18next-http-backend": "^3.0.6",
         "lucide-react": "^0.563.0",
         "planby": "^2.0.0",
         "react": "^19.2.0",
@@ -3367,12 +3367,12 @@
       }
     },
     "node_modules/cross-fetch": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/cross-fetch/-/cross-fetch-4.0.0.tgz",
-      "integrity": "sha512-e4a5N8lVvuLgAWgnCrLr2PP0YyDOTHa9H/Rj54dirp61qXnNq46m82bRhNqIA5VccJtWBvPTFRV3TtvHUKPB1g==",
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/cross-fetch/-/cross-fetch-4.1.0.tgz",
+      "integrity": "sha512-uKm5PU+MHTootlWEY+mZ4vvXoCn4fLQxT9dSc1sXVMSFkINTJVN8cAQROpwcKm8bJ/c7rgZVIBWzH5T78sNZZw==",
       "license": "MIT",
       "dependencies": {
-        "node-fetch": "^2.6.12"
+        "node-fetch": "^2.7.0"
       }
     },
     "node_modules/cross-spawn": {
@@ -4539,12 +4539,12 @@
       }
     },
     "node_modules/i18next-http-backend": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/i18next-http-backend/-/i18next-http-backend-3.0.2.tgz",
-      "integrity": "sha512-PdlvPnvIp4E1sYi46Ik4tBYh/v/NbYfFFgTjkwFl0is8A18s7/bx9aXqsrOax9WUbeNS6mD2oix7Z0yGGf6m5g==",
+      "version": "3.0.6",
+      "resolved": "https://registry.npmjs.org/i18next-http-backend/-/i18next-http-backend-3.0.6.tgz",
+      "integrity": "sha512-mBOqy8993jtqAoj6XaI1XeC/8/9v6EPS+681ziegrPvTB0DoaCY7PpTS0SpY56qLMoS4OI1TZEM2Zf59zNh05w==",
       "license": "MIT",
       "dependencies": {
-        "cross-fetch": "4.0.0"
+        "cross-fetch": "4.1.0"
       }
     },
     "node_modules/iconv-lite": {
diff --git a/package.json b/package.json
index 2183f45..9ec7acf 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "clsx": "^2.1.1",
     "i18next": "^25.8.0",
     "i18next-browser-languagedetector": "^8.2.0",
-    "i18next-http-backend": "^3.0.2",
+    "i18next-http-backend": "^3.0.6",
     "lucide-react": "^0.563.0",
     "planby": "^2.0.0",
     "react": "^19.2.0",
diff --git a/src/components/region-admin/CreateCenterDialog.tsx b/src/components/region-admin/CreateCenterDialog.tsx
index 71490d4..48e0ba8 100644
--- a/src/components/region-admin/CreateCenterDialog.tsx
+++ b/src/components/region-admin/CreateCenterDialog.tsx
@@ -17,7 +17,7 @@ interface UserWithRegion {
   firstName: string;
   lastName: string;
   email: string;
-  regionId?: string;
+  regionId?: string | { _id: string; name: string; code: string } | undefined;
 }
 
 export const CreateCenterDialog: React.FC<CreateCenterDialogProps> = ({
@@ -61,14 +61,15 @@ export const CreateCenterDialog: React.FC<CreateCenterDialogProps> = ({
       if (response.success && response.data) {
         const managers = response.data.users.filter((u: UserWithRegion) => {
           if (regionId) {
-            return u.regionId === regionId;
+            const uRegionId = typeof u.regionId === 'object' ? u.regionId?._id : u.regionId;
+            return uRegionId === regionId;
           }
           return true;
         });
         setAvailableManagers(managers.map((u: UserWithRegion) => ({
-          _id: u.id,
+          _id: u.id as string,
           name: `${u.firstName} ${u.lastName}`,
-          email: u.email,
+          email: u.email as string,
         })));
       }
     };
diff --git a/src/components/region-admin/EditCenterDialog.tsx b/src/components/region-admin/EditCenterDialog.tsx
index 843905f..f232e00 100644
--- a/src/components/region-admin/EditCenterDialog.tsx
+++ b/src/components/region-admin/EditCenterDialog.tsx
@@ -25,14 +25,6 @@ interface EditCenterDialogProps {
   onSuccess: () => void;
 }
 
-interface UserWithRegion {
-  id: string;
-  firstName: string;
-  lastName: string;
-  email: string;
-  regionId?: string;
-}
-
 export const EditCenterDialog: React.FC<EditCenterDialogProps> = ({
   centerId,
   initialData,
@@ -88,17 +80,23 @@ export const EditCenterDialog: React.FC<EditCenterDialogProps> = ({
     const fetchManagers = async () => {
       const response = await usersApi.getUsers({ role: 'center_manager', isActive: true });
       if (response.success && response.data) {
-        const managers = response.data.users.filter((u: UserWithRegion) => {
-          if (initialData.regionId) {
-            return u.regionId === initialData.regionId;
+        const managers = response.data.users.filter(
+          (u: Record<string, unknown>) => {
+            if (initialData.regionId) {
+              return u.regionId === initialData.regionId;
+            }
+            return true;
           }
-          return true;
-        });
-        setAvailableManagers(managers.map((u: UserWithRegion) => ({
-          _id: u.id,
-          name: `${u.firstName} ${u.lastName}`,
-          email: u.email,
-        })));
+        );
+        setAvailableManagers(
+          managers.map(
+            (u: Record<string, unknown>) => ({
+              _id: u.id as string,
+              name: `${u.firstName} ${u.lastName}`,
+              email: u.email as string,
+            })
+          )
+        );
       }
     };
     fetchManagers();
diff --git a/src/components/region-admin/EducationalMaterials.tsx b/src/components/region-admin/EducationalMaterials.tsx
new file mode 100644
index 0000000..6f535a4
--- /dev/null
+++ b/src/components/region-admin/EducationalMaterials.tsx
@@ -0,0 +1,38 @@
+import React from 'react';
+import { useTranslation } from 'react-i18next';
+import { MaterialIcon } from '../ui/Icon';
+
+/**
+ * Educational Materials page component.
+ * Placeholder - to be implemented with actual educational content.
+ */
+export const EducationalMaterials: React.FC = () => {
+  const { t } = useTranslation();
+
+  return (
+    <div className="p-6">
+      <div className="mb-6">
+        <h1 className="text-2xl font-bold text-slate-900 dark:text-white">
+          {t('educationalMaterials.title', 'Educational Materials')}
+        </h1>
+        <p className="mt-2 text-slate-600 dark:text-slate-400">
+          {t('educationalMaterials.description', 'Browse and manage educational resources and materials.')}
+        </p>
+      </div>
+
+      <div className="bg-white dark:bg-slate-800 rounded-xl shadow-sm border border-slate-200 dark:border-slate-700 p-12">
+        <div className="flex flex-col items-center justify-center text-center">
+          <div className="w-20 h-20 bg-blue-100 dark:bg-blue-900/30 rounded-full flex items-center justify-center mb-4">
+            <MaterialIcon name="menu_book" className="text-4xl text-blue-600 dark:text-blue-400" />
+          </div>
+          <h2 className="text-xl font-semibold text-slate-900 dark:text-white mb-2">
+            {t('educationalMaterials.comingSoon', 'Coming Soon')}
+          </h2>
+          <p className="text-slate-500 dark:text-slate-400 max-w-md">
+            {t('educationalMaterials.placeholder', 'Educational materials management is under development. This section will allow you to upload, organize, and distribute learning resources.')}
+          </p>
+        </div>
+      </div>
+    </div>
+  );
+};
diff --git a/yarn.lock b/yarn.lock
index a46527c..e1f4d4d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1296,12 +1296,12 @@ cosmiconfig@^7.0.0:
     path-type "^4.0.0"
     yaml "^1.10.0"
 
-cross-fetch@4.0.0:
-  version "4.0.0"
-  resolved "https://registry.npmjs.org/cross-fetch/-/cross-fetch-4.0.0.tgz"
-  integrity sha512-e4a5N8lVvuLgAWgnCrLr2PP0YyDOTHa9H/Rj54dirp61qXnNq46m82bRhNqIA5VccJtWBvPTFRV3TtvHUKPB1g==
+cross-fetch@4.1.0:
+  version "4.1.0"
+  resolved "https://registry.npmjs.org/cross-fetch/-/cross-fetch-4.1.0.tgz"
+  integrity sha512-uKm5PU+MHTootlWEY+mZ4vvXoCn4fLQxT9dSc1sXVMSFkINTJVN8cAQROpwcKm8bJ/c7rgZVIBWzH5T78sNZZw==
   dependencies:
-    node-fetch "^2.6.12"
+    node-fetch "^2.7.0"
 
 cross-spawn@^7.0.3, cross-spawn@^7.0.6:
   version "7.0.6"
@@ -2009,12 +2009,12 @@ i18next-browser-languagedetector@^8.2.0:
   dependencies:
     "@babel/runtime" "^7.23.2"
 
-i18next-http-backend@^3.0.2:
-  version "3.0.2"
-  resolved "https://registry.npmjs.org/i18next-http-backend/-/i18next-http-backend-3.0.2.tgz"
-  integrity sha512-PdlvPnvIp4E1sYi46Ik4tBYh/v/NbYfFFgTjkwFl0is8A18s7/bx9aXqsrOax9WUbeNS6mD2oix7Z0yGGf6m5g==
+i18next-http-backend@^3.0.6:
+  version "3.0.6"
+  resolved "https://registry.npmjs.org/i18next-http-backend/-/i18next-http-backend-3.0.6.tgz"
+  integrity sha512-mBOqy8993jtqAoj6XaI1XeC/8/9v6EPS+681ziegrPvTB0DoaCY7PpTS0SpY56qLMoS4OI1TZEM2Zf59zNh05w==
   dependencies:
-    cross-fetch "4.0.0"
+    cross-fetch "4.1.0"
 
 i18next@^25.8.0, "i18next@>= 25.6.2":
   version "25.8.0"
@@ -2466,7 +2466,7 @@ natural-compare@^1.4.0:
   resolved "https://registry.npmjs.org/natural-compare/-/natural-compare-1.4.0.tgz"
   integrity sha512-OWND8ei3VtNC9h7V60qff3SVobHr996CTwgxubgyQYEpg290h9J0buyECNNJexkFm5sOajh5G116RYA1c8ZMSw==
 
-node-fetch@^2.6.12:
+node-fetch@^2.7.0:
   version "2.7.0"
   resolved "https://registry.npmjs.org/node-fetch/-/node-fetch-2.7.0.tgz"
   integrity sha512-c4FRfUm/dbcWZ7U+1Wq0AwCyFL+3nt2bEw05wfxSz+DWpWsitgmSgYmy2dQdWyKC1694ELPqMs/YzUSNozLt8A==