I was using the app and made several comments before it froze and was not responding. I decided to un download the app and re download it when I redowloaded it all my highlights and comments for two PDFs where lost. Is there a way to recover this?
Comment markup and annotate
Crash or freeze
Sadly, there isn't much that can be done to recover the notes and highlights from the PDF if it was not auto-saved. Open the PDF from Recent section/tab in Adobe Reader if the file is available in the list and check for the notes.
You may also navigate to C:\Users\,username\AppData\Roaming\Adobe\Acrobat\DC and see if the temp file is available.
let us know how it goes and share your observation.