Cryptomator Gui shows Gibberish as text

So today I opened Cryptomator Appimage today and it showed me gibberish instead of the actual text.
I thought maybe my HDD was failing but there is no other corrupted file or bugged software. I use Ubuntu 20.04 LTS. Instead of opening existing vault and risking corruption i created a new one to test and it looks that it works without a problem. Not sure what to do to fix it :confused: