Q: app store problems, app store problems

Try here >  Mac App Store: Cannot update App Store purchases or updates do not seem available

Report the problem to Apple using the email form here >  Apple - Support - Mac App Store - Contact Support

Should hear back in approximately 48 hours.

Something to try while you wait for a response..

Open the Finder. From the Finder menu bar click Go > Go to Folder

Type of copy/paste:   ~/Library/Caches/com.apple.appstore

Click Go then move any files you see that say:  update or Updates

And move the Cache.db file to the Trash.

See if that makes a difference.

Please let me know what the AppleID is that you see...

Thanks.

That email is associated with a known warez distributor... who's put stuff on Torrents.

Somehow, you or someone else with access to your computer has been grabbing warez off those old torrents, or somewhere else more risky.