SSL Not Working

Followed instruction as per https://homesteadssl.com/ changed DNS info required. Secure shows up with valid certificate and padlock - yet after a few seconds the sites revert to not secure.
This is happening for sites https://www.freecashcasinogames.com/ and https://usaplayeronlinecasinos.com/ as far as I can see the DNS records and info are correct. Tech error or did I miss something?