Jeremy Davis's picture

And even accessing your server via the FQDN (https://tfl-crm.ddns.net) works fine for me!? Obviously I don't know your password (and I don't want it) so I can't actually log in...

FWIW I am using Google Chrome Version 55.0.2883.87 (64-bit) on Debian Linux. Perhaps try an alternate browser? Or maybe you have sort of adblocker/tracking blocker that is mangling your traffic? You can test that by trying with an "incognito/private" window (generally plugins/extensions are disabled when you do that).

Another possibility is just stale cache/cookies. Try cleaning them and see if that helps. An "incognito/private" session should also work around that.

Good luck.