I know, we can appeal by clicking the button report to admin on a personal message, but i never used it yet, I don't know how it works because there is 5 admin, and I still don't know which one should i choose.
There are only 2 admins, the rest are global moderators. In the context of what you wrote, I don't understand why you would use that option at all, because the
"report to admin" option serves to report another member's personal message if there is a need for it. So in the event that someone sent you a message that contains inappropriate or malicious content, which could be a death threat, blackmail, a link to a virus/malware or something similar.