On Friday I went through all the steps set out here:
The final step after I added the SSL cert and key details ( and the TXT record to the zone file on my server ) was the “verify” button… which succeeded, and reported no errors. The subdomain then went into limbo for a few hours while things clunked through DNS, until the subdomain reverted to the default index page on my web server. 48 hours later that’s all it does, Is this expected behaviour?
The Custom Domain was meant to solve the Third Party Cookie issue, but it’s achieved nothing. The sign-on widget still fails the same as before. I’m about 10 days into this now, and I don’t seem to be making any progress. And yes… I raised a ticket last week.