GitLab Pages not working for https://gitlab.com/extensionsapp/extensionsapp.gitlab.io

I am not sure if this is a problem on a recent patch of EE or just GitLab.com

User's project is here:

https://gitlab.com/extensionsapp/extensionsapp.gitlab.io

I can not access it here or here:

https://extensionsapp.gitlab.io/

http://extensionsapp.gitlab.io/

I cloned it here, and did not change any code:

https://gitlab.com/dewetblomerus/extensionsapp.gitlab.io

And I can access it here and here:

http://dewetblomerus.gitlab.io/extensionsapp.gitlab.io/

https://dewetblomerus.gitlab.io/extensionsapp.gitlab.io/