im trying to use a game we need for school and the resolution is suddenly extremely blurry. It fixes itself if you take it off full screen to a different size but then the whole game is too small to see well

Try asking the developer about this. Also try updating your system maybe it is you. To be sure if it is you send the game to a different PC and then try it there, if the same error occurs then ask the developer for help.

Change the zoom level of your browser. Browser games operate on a virtual canvas that is not the actual screen resolution. It is far, far lower. Zoom in and then activate fullscreen. Depending how the game implements fullscreen, that might help. If it is one of those games, you can also press ctrl and plus minus while having fullscreen active.

Guys, can you please tell me how to contact cookiedraggy so that I can be unbanned from Discord?It's just that I was hacked a few days ago and someone was sending out ads on my behalf.