Photopost is not an addon for vbulletin. it is a full featured gallery that happens to integrate with the vb
login and header footer stylesheet. Your issues are from you trying to merge two different systems thats your unholy mess your talking about here. I gave you a link to a tool that would help.
As noted on the photopost license you agreed to on purchase there are no refunds. We state all our product features up front and give tons of site examples and are very clear about our licensing. PhotoPost Photo Gallery License Agreement