ContributionsMost RecentMost LikesSolutionsRe: Invalid Email Format - Catalina OS I am experiencing the same thing. I try to log on with the logmein client and for some reason, when I use the correct credential combination, it turns the@ into %40 and responds with an invalid email address error. I was beginning to think my machine (MacMini running Catalina) was somehow compromised until I saw this thread here showing that others are experiencing the same problem. Any suggestions? Please! I am all ears and I will try. Thanks