Hello all,
My client said that she was not able to open a particular survey on her ipad - when she click the survey, t's spinning then closed when she hit the collect button. Her iPad model is iPad Air MD799C/A and IOS version 12.4.7. (She was able to use other surveys on the same device - much simpler version. So I don't think the issue is if she really could use the survey123 or not.)
I am testing the same survey from my end with iPad mini 5th generation (MUQW2VS/A) as well as my iphone7 and galaxy tab and all worked fine.
The survey that she has a trouble with has lots of related tables along with 250KB of csv files, 1 svg, and the form itself is 600KB. I am not sure if the size of the survey affect on the performance on the mobile device (but it works okay for other devices) or some functions are not supported under the certain iOS version or ipad model.
Any advice? 
Cheers,