Opening files in illustrator iPad to find them blank

Hi I'm relatively new to illustrator for iPad (but not desktop) and am having some issues opening my files. Several strange things are happening:

1. Opening my file stored in the cloud and the page is blank. If I zoom out the entire screen will be background grey and it will say Arthoard 1. But the actual art board (is, the edges) are not visible, nor is the content. All the layers are set to be visible and checking/unchecking them does not have any effect. Changing view mode to outline suddenly the art board appears and my file content is still there but reverting back to Preview mode has no effect. It stays in Outline. It's completely unworkable as I cannot select any objects from any layer. Zooming in or out has not effect.

2. to check if the issue is in any of my other files I open anothe, find them to be normal so go back to my original file. Which now opens and shows the content from the other file (ie, file 1 shows title of file 1 but content of file 2). 

Im running the most recent version of illustrator and the iPad is fully updated 16.1,1. I have nearly 80gb of free storage and just don't understand why it's so glitchy and I can't work at all. 

please help!