Ugly Cryptomator icon on GNOME top bar

I installed cryptomator on Fedora 33. I made a cryptomator.desktop file to make a menu entry and used a nice cryptomator image (1024x1024) for that. On GNOME menu is beautiful but when i actually open the application an ugly low resolution icon appears on the top bar. Other application icons are nice (dropbox, pcloud etc) in contrast with cryptomator icon. Can i do to improve this?