Speed up DNS propagation
When you add or change DNS records, the change takes time to reach every DNS server on the internet. For Superblog, it usually takes 5 to 30 minutes, and occasionally up to 48 hours.
Make it faster
Public DNS services keep old answers for a while. You can ask them to forget your domain's old records:
Enter your domain, or subdomain, in each one.
Check whether your records are visible
In Custom Domain, click Refresh Status. When it says Active, Superblog can see your records.
If it still says Pending Validation after a few hours, check each record against the table in the dashboard. A typo in a name or value is the most common cause.