When I join any game on Polytoria, there is a see through window that pops up and closes after 1 second. It does not join the game and is really annoying!

I am on Linux Mint 20 and I installed the Linux client!

Please help.

Have you opened the file?

Yes, I installed the package.

I tried reinstalling it but now I cannot join games. Nothing happens when I click play!

if your avast antivirus delete something from polytoria then you should check that vid www.youtube.com/watch?v=SLmszDjrhC4&t=12s

i dont have the client
it says it is malware

I don't have avast or any antivirus I think, linux mint does not have that. I do not think it is an antivirus!

Linux Mint has a firewall but it is off.

well i cant help you. i am very sorry for that. but dont worry there a lot of games fun then polytoria!