The cleantalk plugin is blacklisting legitimate IPs.
The 2 admin account IP's were blacklisted and now customers / users are reporting as blacklisted.
Eg. 184.108.40.206 reported as blacklisted. Here is the cleantalk report when viewing that IP.
Anti-Spam protection Not in list Jan 07, 2019 06:00:28
SpamFireWall [?] Not in list Jan 07, 2019 06:00:28
WordPress Security FireWall [?] Not in list -
Type of attacks Spam -
Why is this occurring? This is a real problem. Our Customers are being falsely blacklisted.
Anti-spam plugin for WordPress