I can't "undelete" my blog, that used to be published as a custom domain URL. I received the following error code: bX-afpmyd.This problem, like others, appears to have started when custom domain publishing was restored, last week.
Blogs deleted when a custom domain URL is in use have always been a challenge. Similar to the abandoned custom domains problem, they have resulted in yet another cause for the well known custom domain problem
Another blog ....
Now that Blogger is requiring verification of domain ownership, by adding ownership certification using a new "CNAME", it's likely that either lack of the new "CNAME", or broken blog / domain pointers, are going to be a problem when un deleting blogs formerly published to custom domains.
If you are unable to un delete your previously deleted custom domain published blog - and you are otherwise able to restore the blog in question - you, like other blog owners trying to make changes to their custom domain published blog, will need to use the Publishing wizard, and the "settings instructions", and add a unique domain ownership certificate to your non BlogSpot domain. Then, if able to un delete the blog, you'll need to re publish the blog to the domain.