Sorry for taking so long in responding to your query.
As per the issue description mentioned above, when opening a saved pdf, it displays a blank page, is that correct?
Check if an update is pending for Reader if using Adobe Reader to view pdf. Launch Reader > click Help > "Check for Updates".
You may also download updates using these links:
Could you please let us know if you are opening a pdf in Reader on in a web browser?
What is the version of Reader you are using: Identify the product and its version for Acrobat and Reader DC
Does this happen with a specific file only or with all the pdf files? Have you tried opening other saved pdf files?
Also, how you saved those pdf files?
Which operating system you are using- Mac/ Windows?