You can test all these phpMyFAQ installations with the following credentials:
HEADS UP! phpMyFAQ 2.8.21 on HHVM is in an very experimental state!
HEADS UP! phpMyFAQ 2.9.0-alpha2 on HHVM is in an very experimental state!
You can do whatever you want with these installations, the installations will be reset every day. And yes, phpMyFAQ 2.8.21 still runs on PHP 5.3, but we don't list it here anymore, as it's EOL.
Thanks to myLoc managed IT AG for supporting our demo installations!