Yes, that's exactly what I had to do with my iPhone. Delete the app, reload and then re-register. What about your new iPad? Storage and app size?iPad Mini4, this is from memory. I believe it had 16G memory and I would see the app bloat to over 8G. Only way to clear it was delete the app and reload.
It was a PITA because after deleting the app I needed internet to reload the app and register it which was not always available in the field.