Look Me Up By Email problem Does anybody have anything in the &quot;Look Me Up By Email&quot; tab? I'm trying to understand how to remove an item from &quot;Look Me Up By Email&quot;. This app was uninstalled a long time ago and it's still showing on my Mac.
I also did a clean install of macOS Catalina. I don't know what more I can do. It's a bug or maybe I have a virus on my Mac (MacBook Air early 2015, macOS Catalina 10.15.1)?

I received a letter from MarginNote, but there's nothing useful here!

This is just a residue in the look-me-up list.The app does not have
access to refreshing the list when it is uninstalled on your devices.
We do have forwarded this issue to Apple’s dev team about this issue
and hopefully, it could be fixed eventually. A couple of words about
this if what you are actually concerned about is your privacy
protection. The feature is added in MarginNote 2 given that app
supports sharing an exported notebook to a fellow MarginNote user so
that some sort of teamwork can be achieved. It serves only this
purpose and no more than that. Plus, ticking it off in the list is
already an effective measure to turn it off for good. To sum up, it is
a left-over option that can be turned off and will not affect your
(un)using of your macOS device.
Regards, MarginNote Support Team
The GUI is located in the Apple ID > iCloud >  Options -> Look Me Up By Email window.

Mine is blank:



So why is mine blank and your filled? Because Apps that use iCloud can offer this service to other iCloud users so that they can find you.

As discussed here and here and here and here, one way to remove the app is to delete it.  It may be that some apps give you the ability to turn it on or off, but it's really an app thing.

EDIT:

If the MarginNote application is not installed and you are still seeing this GUI, try this:


Open Terminal.
Type: find $HOME -name '*MarginNote*' -ls
Post the output.


If that doesn't work, then try this: 


Install on a new machine (or in a VM), just so we know everything is clean.
Log in but do not add your Apple ID.  You should not see anything in the "look me up by email" GUI.
Log into iCloud but disable every service. If you see things in the GUI, then it's somewhere in your iCloud count that you can't reach.
Sync just the iCloud drive. If it appears, then there is a file in your iCloud drive that has this information. Go into Terminal and list all of the files with the "find $HOME -name 'MarginNote'