Delaine & Co review for Yotpo: Product Reviews App

I just started using this app with mixed results. It presents the reviews well on my product pages, but I have customers say that they try and fill out the review request and they get error messages. One couldn't fill in the text box and after submitting review it go a message that said "page not found". It's too bad because they love our product, but I can't badger them to keep trying to fill out the review