The two steps in publishing subpages on your custom domain are to :
If, in this process, you are encountering delay issues, then you can do the following to verify if the Domain/subdomain has been published correctly.
If you see this error, then try the steps mentioned below.
1 Go to MxToolbox or any similar tool,
Enter the domain name in the lookup box and then click on the dropdown to choose 'TXT record'.
2 If your DNS record is published, you will see the same in the results.
If the test appears as "Cannot find DNS record," then you have to wait longer. If published here, then you can contact support@subpage.app for further help.
3 Similarly, when creating a DNS record for a subdomain, you can check if the record is published by choosing CNAME lookup from the dropdown.
If the test appears as "Cannot find DNS record," then you have to wait longer. If published here, then you can contact support@subpage.app for further help.