my custom domain name is not working on google app engine.

[Nathan Lei]

my custom domain name is not working on google app engine.  .

my default domain which google provided is working fine, but my custom domain name is not working,  I did anything what they say tried 3 different domain name!  

[NP]

Can you explain what you mean by - not working on Google App Engine?

For example, were you able to add it to the Custom Domains tab on your console? Were you able to verify ownership of the domain?

Put another way, did you follow the steps in this documentation but you encountered an error? If so, on which step did you get an error and what is the error?