I redownloaded the Linux version and have the appImage file, but it does not have a ball symbol and nothing happens when I run it. Does it matter from which of the four sources (Mega, Drive, Local A/B) I downloaded it? Is there a way I can try to run it via the terminal?
Update: I've tried sudo chmod u+x and a+x and it hasn't helped. In properties I made sure to allow to execute the file as program.