Home Assistant Cloud secure connection failed

I’ve just signed up for a free trail of Home assistant cloud.

I’ve created an account and logged in through home assistant and I can view my remote connection URL. However, I get this message:
Secure Connection Failed

An error occurred during a connection to xxxxxxxxxxxxxxx.ui.nabu.casa. PR_END_OF_FILE_ERROR

Error code: PR_END_OF_FILE_ERROR

The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
Please contact the web site owners to inform them of this problem.

Same issue on firefox and chrome.

Any ideas much appreciated

seems to be working now. Maybe just a delay in domain propagation