Can't save document to document cloud.

[Wayo-]

"Error saving document. There was an unknown error while saving this document".

[MobileDeveloperCK]

Hi,

Acrobat Reader shows the error message when it fails to save/upload a modified PDF document to cloud.

The main reason for the error is a network connectivity issue.  Would you make sure that your iPhone/iPad has stable network connection for the upload operation?

Thank you.