Unble to refresh dataset
After going through quite a long process, there wasn't a solution for me. The answer was that the system is currently not capable.
The issue comes from a function that parses HTML. I am using web.page to do this. It is supported in the desktop but breaks in the cloud service. You can try using a data gateway. They specifically say in some remote part of their support that if you use web.page you have to use a data gateway. For me, I can only create a local data gateway, so there really is no point and I am unable to schedule refresh until they fix the issue, which may be never.
Sorry that isn't very helpful, but I was basically told, you're out of luck. Try and remove your use of web.page unless it is absolutely crucial. (It is for me since there isn't a certified HTML visual)