Error code 280: Version is out of date

I cannot post in bug reports for some reason, but I keep getting a screen saying that “Your version of Roblox is out of date. Please update and try again. (Error code 280)”. I use the website for Roblox.

I have tried multiple things online but nothing is working.
Please help me

Have you tried uninstalling and reinstalling to assure the latest version is installed?

I have tried uninstalling the Roblox Client but it doesn’t even seem to uninstall. I don’t use the app bc it is buggy, I use the website

How to solve it?uninstalling and reinstalling is useless