What am I doing wrong?
Go to
https://github.com/spesmilo/electrum/tree/master/pubkeysDownload ThomasV, Emzy and sombernight_releasekey files. Make sure that the resulted files start with
-----BEGIN PGP PUBLIC KEY BLOCK-----
and not some html.
Import the 3 files into Kleopatra (if you've saved correct asc a double click may do).
Then check the Electrum asc again.