Member was auto banned falsely, can not be unbanned, says they are not banned, but they can't reconnect.

Hello, so a member on my server got auto banned by our anti spam and when I went to unban them it said "member is not banned". I tried "pardon" "pardon-ip" "unban" "unban-ip" etc etc. I then was stuid and banned them again then to ban them then unban them, thinking it was a glitch. It did not fix that issue, it still has the same message and no matter what I try it doesn't unban them. I have checked everything and made sure I tried everything. Nothing works. Help, please.

Yeah, I installed a plugin for anti spam, but it was a bit strict. Thanks for the help I figured it out. It was an issue with advanced ban, since that's what we were using for banning that's what I thought was the issue then our server crashed and it said that advanced ban had an issue while running so I removed the plugin then this morning I was able to unban the member. Issue: Advanced ban Solved.