Acrobat Reader for IPad Crashes

I'm using version 20.02.00 (20200215.092048). I'm having issues. I'm working on a document, putting comments, underline, adding text, then suddently crash. All I did is gone. I star again, now I press done, so it can save. Go back to edit, then It crash, and all my work erases, even the one I did and press done.

'I'm using 'iPad Pro 3rd generation 12 inch with latest iOS updates.

please let me know how to proceed.

thanks