Yes, it's a coincidence. Guys, I am using the same software as you do, before you even have the chance to use it, on this site and all of my live and testing sites. If using Admin Tools resulted in not being able to log in to the back-end of your sites, I'd have noticed much longer before you did. What most likely happened is that you changed the Super Administrator ID and then disabled the wrong user. That's why there's a clear warning that you have to read the documentation before proceeding with that feature.
Regarding tagging along to someone else's post, it's no longer possible. I have gotten rid of the forum and I'm now using a ticket system. The ticket system only allows the owner of the ticket and support staff to post to it. I did that because User A had Issue X, User B had Issue Y and they both posted on the same thread because something random looked similar (e.g. they both use the same hosting company). I can't provide support if there are multiple people with different problems posting at the same time. It defeated the purpose of having a forum, i.e. having a linear tracking of the troubleshooting progress. Mixing in multiple issues resulted in me giving way off replies to all parties.
Nicholas K. Dionysopoulos
Lead Developer and Director
🇬🇷Greek: native 🇬🇧English: excellent 🇫🇷French: basic • 🕐 My time zone is Europe / Athens
Please keep in mind my timezone and cultural differences when reading my replies. Thank you!