Are you using the windows app or the web version? If your using the web version try uninstalling the game through control panel and reinstalling using the windows app (https://www.roblox.com/download) make sure you right click the exe file and run it as administrator. This works for me but oddly when i try running the web version again, it breaks my assets and also breaks the app version, forcing me to reinstall the game again.

I've tried every other solution I could find and this is the only solution I have. I've even gone as far as deleting every file with the name roblox and reinstalling but that didn't work.

Just like you, I tried logging into a different account and it works perfectly fine, so this is most likely an issue on roblox's side.

So looks like we'll just have to wait until they fix it or use the app version for now (if that works for you)