A - My prefered software/game isn't working any more.
Because I've not enough time and money (you can send me $ if you want :-), I have not tested every network software available, neither network games ! Some of them may be in trouble since atguard is running (try to stop it, if the sftware is going on normally again, so you can think it's atguard).
I would be pleased to make necessary to make compatible the firewall (and my security rules) with the softwares you're using, so e-mail your remarks !
B - Some can nuke me or hack me !
Hummmmm, this all is not 100% infaillible, but this sould leave away most of nukers and young hackers. If you're sure that's the case, e-mail me, I will send you another security ruleset more smooth in order to solve difficult cases.
C - I can't manage starting the FireWall correctly.
Most of the cases show me that either the software licence was incorrect or badly installed. Please contact your local reseller !
Other case went up when a previous release was installed. In this case, it will be necessary to uninstall everything and re-do every steps of installation and configuration.