Can you please help me out with PDF file is not support issue? File is highly confidential, please ping me email to share a file.
Does you get any message in Acrobat Reader?
If you want help you need to provide more details. And the only people who are likely to contact you privately are scammers, so be careful...
You can at least tell us
- the verson of the app used to read the file
- the exact message
Maybe we can help you from that without needing to see your file.
Sending private files is really not in the spirit of the forum - and how could you trust a random person anyway?