Donncha — I have been gratefully using your plugin — version 4.3. When I upgraded to version 5.0, admin login does not work. It redirects me to https://blog.coverification.com/?dm_gotoadmin=1&back=%2Fwp-admin%2F&action=login&dm=5c1d070fb35d42d606a159ed4e23b814&k=0c1120d67e9ef5612d05ad0e4c7fbd82&t=1791696408 and shows a page with a message saying “Unknown login key”.