Can't upload from Storyline to Review 360, can't upload zipped file to Review 360

I have tried several ways to get this to work and have had no success. It has worked in the past but has not worked for over a week. I get an error saying, "There was an error when publishing your course to Review 360. Please check your internet connection and try again." I have tried saving for manual upload, taking special care to ensure the file was saved locally, but I get the error saying, "Sorry, the file you selected is not a supported file type." Ironically, I can upload to Review 360 from Presenter using PowerPoint, as long as the file is saved locally (not on One Drive). I have reset my router and even reset it to factory settings. I am at a loss. Please help! Thank you!