Prototypes (even small ones) Crash on iPad to Black Screen

I have a small 5 UI design that worked great on iPad. I went away for a 4 day trip and now it will not load on ipad. I made no changes in that time except to invite my team, and there was one comment and response.

Prototype works fine on macbook browser and app.

Prototype will load on iPad app and browser for less than 1 second (i can see the UI) and then it goes blank with no options for me to take except to exit.

I have delete ALL non essential frames and content (which was not ideal).

the design is very small so “reducing size” is not an option (btw, I am working on an ipad PRO M4 - so more powerful than most computers).

this IPAD is the product demo platform so it not working, it a big problem.

Any aid would be great.