Problems using custom domain ".dev.br"

Hi!
I’m having an issue trying to add the a custom domain to my github page. I try to configure an apex domain, like “example.dev.br” using the official docs.

The page show me a warning that i`m using a subdomain, and the TLS certificate is not generated. And it’s been like this for 2 days.

Its looks like that github don`t recognize “.dev.br” as an valid apex domain, and this is the root of the problem.

I change for an “.com.br” domain, and in 10 minutes everything has setup and ready to use in https.

Please, can someone confirm if this is an github pages issue?

Thanks!

Look like it`s a Let’s Encrypt error.

Error: Let’s Encrypt new auth; status 429

The PR to fix this will be deployed into production on July 30th, 2020