The document is locked on the tablet for security purpose. The first page of the document ask for a username and password but the screen do not respond when pressed in the entry field. The document is unretrievable on the tablet but able to unlock on a PC. Also I unlock the document on the PC and try to locate the document on the tablet while link in activated. How to unlock the document on the tablet?
Could you please share the screenshot of the lock screen that appears when you try opening the PDF on your tablet.
Also, if possible, please share the file with us so that we can take a look.
I have sent you a private message with my contact ID details