GitHub page isn't working neither custome domain

My page was working on then I changed to a costume domain and It worked but then I wanted to changed it to other custom domain I bought and everything cracked. Now it’s not working username, neither the old domain… it’s just not working. :frowning:

It says this in options:

Domain’s DNS record could not be retrieved. For more information, see

When I try to go to my github page like it instantly redirectioning me to the old domain “” but it’s not working

Any help?

Maybe it was a DNS propagation issue, since it’s working now.

As far as I know, prefixing subdomains with www. never worked due to SSL certificate issues.