All my scans are gone. Where did they go?

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Last night, I had all my Scans.

Woke up.

All but the last 2 I did last night and one from ages past are the only three left.

Checked the Cloud where they were supposed to be going.

NADA. NOT THERE. 

These are quite important documents with privileged information on them.

Where did they go and can I retrieve them?

I need help!

[NIRAJKUMAR5E0B]

I have many files PDFs are on Adobe reader app but many of them PDFs are not open why?