[TheLastSuperman]

Originally Posted by BirdOPrey5

I believe some anti-spam features may 'auto ban' based on IP address, email address, or other values.

That they do! Now take into consideration the fact that cloudflare and similar services are making many ip's seem identical if not similar on certain sites due to server setup and your site due to an albeit awesome anti-spam defense (failing to realize this was a good method years ago but not now in the least) has just banned an IP that someone else will be assigned once they visit and now they're simply banned.

Wonder if this person is seeing cloudflare or similar ip's and banning them from offensive or disruptive members which is in-turn affecting normal members such as yourself? i.e. they were banned by ip, you visit the site now cloudflare assigns you that temp ip and BAM you just can't access due to the ip ban.