Hope you can get up and running soon.
I purchased my new iPad specifically to use Shapr3D. The acquisition was used as an opportunity to start afresh and install only a few Apps.
The motive was to be sure that Shapr3D got use of all the room and resources possible. In event of unexpected changes/slowdowns/whatever the culprit would likely be the latest addition and that could be easily confirmed and resolved. I am very happy with the outcome.