As you can see in the screenshot, all it says after pressing the post button is "Please wait. Processing...". It never ever proceeds past this point, no matter what web browser I use. I've tried all the browsers I use: LibreWolf, Mullvad, Floorp, Firefox and Brave. None of them let me post on the community forums. I tried this 2 or 3 days ago too; same problem. Has anyone else run into this issue?
I couldn't remember if I was connected to Wi-Fi or not on the phone when I made the post, so I made another post to another game page on the phone (while connected to Wi-Fi) and it worked just fine.
My PC is also connected to the same Wi-Fi as you'd expect.
What I did notice strangely, is that I can make comments on my PC, I just can't make posts. When I make a comment, I appear to have the same issue where it endlessly says "Please Wait. Processing...". Except, if I actually go back to the post I tried to comment on and refresh the page, my comment successfully appears. It just doesn't work that way when making my own post for some reason.
Someone here suggested I check the browser console for errors. I checked, and I get multiple errors in LibreWolf.
This looks like an error on GOG's end. Did you try to delete all cookies and cache (for GOG) and try to login again? Ctrl+F5 should do the trick. I would suspect Librewolf's strict security but since it happens on others as well, it doesn't seem like the issue here.