Hey :)
If your account is banned for no reason that will be because of an automatic function that the system runs, that sadly leaves people no message so they end up thinking they did something wrong. It's probably because the emails we've been sending you to that account's email have been bouncing back. That kind of thing damages the site's email reputation badly so accounts with an email that is disabled or no longer valid get switched to a "dead account" user group.
If you contact
[email protected] with the details of your other account then that can get looked into :)
In the meantime, welcome back!