I just updated to the Smushit Pro and the bulk smusher

Hi, I just updated to the Smushit Pro and the bulk smusher won't even get to 1 image, and when I try individually in the media library it just says "Sending" for hours on end. I had previously been using the free plugin, but had since deleted it before deciding to bite the bullet and upgrade to the pro. Could there be something I need to clean out so that the Pro version has a clean install or something? It's not working at all.