Hey Robin, thanks for detailing your experience. I'm glad you were able to figure out a workaround. From our logs though, it looks like things started breaking very recently. We'll see what the shopify folks have to say, but we're trying to implement fixes on our side to work around as much of the issues as we can!
BTW, feel free to reach out to our support at support@reamaze.com if you have any issues specific to Reamaze that we can help take a look at. Cheers.