Hi - I have - they keep pushing me to the forum for your mod in the MODS forum!
So there's no help to offer?
First, back up everything. Secondly, you can run the database cleaner in the phpBB support toolkit. It will remove all mods in the database (not modded files, you'll have to replace those files yourself to remove mods there). From there you should be good to go and can install any mods you want. Just be sure to backup next time in case you have issues.