I have a website at https://www.apparel-online.co.uk which is still under development. It is running on the latest version of Joomla. Also I have just upgraded the Admin Tools extension to v4.0.2.
I have an issue with one of the other extensions (J2Store) in the system (not related to this) and provided administration access details to J2Store support staff to do some investigation. They responded by saying that they could not access the administration system. This was a surprise to me as I myself accessed the administration function just an hour or so ago to upgrade Admin Tools to 4.0.2 which seemed to go fine.
However it now seems that we are locked out of the administration system (by WAF?). If you go to https://www.apparel-online.co.uk/administrator/ it redirect me (anyone) to the frontend home page?.
I have followed your documentation and tried two things. I followed these two procedures :
https://www.akeebabackup.com/documentation/troubleshooter/atadminpw.html
https://www.akeebabackup.com/documentation/troubleshooter/atwafissues.html
Both of these procedures did not resolve the issue.
I also notice that in my emails, I have three emails saying :
We would like to notify you that a security exception was detected on your site, apparel-online, with the following details:
IP Address: 121.200.52.164 (IP Lookup: IP Lookup)
Reason: Admin Query String
If this kind of security exception repeats itself, please log in to your site's back-end and add this IP address to your Admin Tools's Web Application Firewall feature in order to completely block the misbehaving user.
Can you offer any guidance as to what might be the problem and what I might try?