I’m having some problems when publishing to ReviewLink. Lectora won’t let me upload the file and states it was too big (see screenshot). The file size of the ZIP is 14895 KB, so that shouldn’t be too much. The advise to “remove some resources” might be helpful, although there are no unused resources in the title, and I can’t just remove content 😉 This file is the 10th translation of a course and ReviewLink has accepted all prior languages without issues. All these versions are (more or less) same size.
Not sure this will work for your issue, but I often have issues uploading to ReviewLink. I was told by Trivantis to delete the “Review” folder that is auto-created when you publish and then export to ReviewLink. I have to delete that folder prior to publishing every time or I get an error. Hope that helps.