For reporting behavior or actions on any FAF monitored medium use: https://www.faforever.com/account/report
For appealing actions done to you:
Write a message to firstname.lastname@example.org or PM a moderator on our Discord server.
Understand the Moderation Team are volunteers and will respond to your inquiries within a few days. If they do not, feel free to send a followup message to them. If that still fails, contact me and I'll relay the concerns.