I don't know what to tell you and I'm sorry this is happening to you. It's so rude of the admins to not tell you exactly why you were banned.

If it were me though, I would change all my passwords to one I have never used before. I would choose 2 words and a set of number.

For instance, since I have two dogs, Nova and Konnor and Konnor's birthday is 12/14 my password could be Novakonnor1214 . It's nearly impossible for someone else to figure out what the password is because it's not 1 word, or just a set of number but it's also easy for me to remember. Useing this method should keep you safe.

I hope this helps,
Ashley