We're aware that the multi-mods don't work. We are looking at possible fixes or new versions of the extension.
To illegals; you probably don't care, but I received 3 messages about this in the last 12 hours so I'm publishing this for everyone.
We know they don't work - they were made for the old version of phpbb and no new version was made, so we're looking at our options for something new.
I think it's tiresome to move threads manually as well and copy formats, don't worry.