@baymac The correct server URL is https://gitlab.com, you will get a 404 using any of the other URLs.

The call you are trying to make is trying to pull down every project at https://gitlab.com so it will take hours to return and you could possibly be rate limited because there are 100,000's or millions of them.

This can be quickly validated by using gitLabApi.getProjectApi().getOwnedProjects(); which will only pull down the projects you own.

I believe the login function is not working because you are using the wrong URL, try it with https://gitlab.com