I also had problems some time ago with this add-on, I gave up in the end, and that was on php v7.3.2 - last night after reading your thread I tried again on XF 2.2.5 and still errors ( it trashed my database too) lucky it was a back-up or would of lost everything. I have older version 3.1.0 (but can tell you it will NOT install on XF 2.2.x - it has to be 2.1.12 or lower.