I've been using this app for the past few days and have not had this problem, but I have had others. For instance, I can't create collections because of a permissions error. I've tried contacting the people behind the app, but haven't received an answer yet. I also tried their knowledge base/FAQ on their website, but it brings up a Forbidden access error when I try to look at anything other than the main page.
I really like this app and hope things can be fixed with it.