

I think you’ll have to be more specific. Where did you get the driver from? Did you add any Nvidia repos or are you using only the vanilla popOS repos? Or did the the official repos push an update that doesn’t (didn’t) work? In that case, definetly ask in their support forum and maybe open an issue.
Not too familiar with that specific distro, but it is usually a bad idea to add different repos unless you know what you’re doing. Getting the drivers through the official repos might be a couple weeks (possibly months) late, but it will always be the safest bet.
Just glass cleaner, a lint-frre cloth (like micro-fiber) and most importantly a clean and smooth squeegee. Spray it on and scrub the window in small circular motion with the cloth. Squeegee it off in a slow and steady motion from top to bottom.
Might have to repeat it again if the windows were super dirty to begin with.