My server uses Battlemetrics RCON to issue the bans. If I have the bans synced to my server then server amour picks them up. However once I remove the ban in Battlemetrics, ServerArmour does not seem to allow the players to be unbanned. Manually typing in RCON "unban (steamid)" does not seem to unban them either. So to unban players I have to remove server armour, then unban the players, then reload it.

I will look into this, and release a fix. 

Merged post

This should be resolved in the new version, please let me know.