App Engine Custom Domain Mapping Issue: Domain not mapping to App Engine services after 48 hours

[kathelan]

Hello,

I need assistance with custom domain mapping in App Engine. Let me explain my main issue:

I have implemented two services, backend and frontend apps, in App Engine. The frontend uses the default service name. I decided to buy a new domain name on GCP Domains and started custom mapping my application. I received special IPv4 and IPv6 addresses for A and AAAA record sets with blank DNS names, so I added them all in the Cloud DNS zone. However, after waiting over 48 hours, my IP addresses have not yet been mapped to my domain.

I have searched extensively on forums and read all the documentation about App Engine domains. I didn't try using the dispatch configuration because I believe the App Engine dashboard should map the domain to my default service, as I understood from the documentation. Unfortunately, I cannot find a solution, and I would greatly appreciate any guidance or hints. Thank you.