don't hear the sirens

[Moos1233456789]

in my server there is someone that developed the els for me and for some reason just at one point he couldn't hear them anymore
everything he tried did not help tried reinstalling GTA and FIVEM neither worked everyone else hears it fine but he just doesn't whatever he tries also installed it to his test server also not working (I can't possible think the problem is on his side since he fully reinstalled his GTA and FIVEM) if you got any idea PLEASE HELP ASAP

this is the config:

Config = {}

-- If you are using WM Server Sirens, uncomment below
-- See https://github.com/Walsheyy/WMServerSirens
Config.AudioBanks = {
'DLC_WMSIRENS\SIRENPACK_ONE',
'DLC_WALSHEY\SIRENPACK_ONE',
}

-- Change these values to tweak the light reflections around your vehicle
Config.EnvironmentalLights = {
Range = 70.0, -- how far the light reaches
Intensity = 0.1, -- how intense the light source is
}

-- You can make the flashing high beams brighter. Set to 1.0 for GTA default
Config.HighBeamIntensity = 2.0

-- Whether vehicle passengers are allowed to control the lights and sirens
Config.AllowPassengers = false

-- Whether you can toggle the siren, even when the lights are out
Config.SirenAlwaysAllowed = true

-- Whether vehicle indicator control should be enabled
Config.Indicators = true

-- Enables a short honk when a siren is activated
Config.HornBlip = false

-- Enables a short beep when a light stage or siren is activated
Config.Beeps = false

-- Duration for the warning beep (in seconds)
-- Should be equal to the WarningBeep.ogg file
-- Only change this if you replace the audio file with your own
Config.WarningBeepDuration = 2.0

-- Enables controller support for controlling the primary light stage and the sirens
-- DPAD_LEFT = toggle primary lights
-- DPAD_DOWN = toggle siren 1
-- B = activate next siren
Config.ControllerSupport = true

-- Customize various strings to your own liking
Config.Translations = {
VehicleControlMenu = {
MenuTitle = 'Vehicle Control Menu',
ExtraDoesNotExist = 'This extra does not exist on your vehicle!',
MiscDoesNotExist = 'This misc does not exist on your vehicle!',
FlashingHighBeam = 'Flashing high beam',
}
}

this is a XML file: