Unable to designate "Downloadable File" in point of sale product listing

[SeedSigner]

Thanks so much for your work on this plugin.

I am attempting to post files for sale using a self-hosted btcpayserver instance running on a Start9 machine. I've created a point of sale instance, and added a product to the point of sale. There are currently three files that I've uploaded using the file seller plug in. One is the display image for the product listing, one is the file I'd like to sell, and another is a blank text file that I uploaded for testing. When I configure the product listing, I select the file I'd like to sell from the "downloadable file" drop-down box, and then click the save button. When I go back and inspect the "downloadable file" drop-down, instead of showing the file I'd selected, it shows the default "no file" entry. And if I attempt a test purchase, after paying the invoice, links for all three of my uploaded files are available for download from the purchase receipt.

Please let me know if there's something I might be doing incorrectly or differently to resolve this issue.

[stupleb]

This is a bug specific to Tor, whether using .onion or via a proxy in the File Seller plugin.

1. Create a new store

2. Add a product

3. Select a file for File Seller

4. Save

5. Visit Store

6. Purchase product

7. View receipt

8. All files listed as a list rather than the one selected

@Kukks