Members can be added by project Maintainers or Owners
The username under which gitlab is running, has changed from gitlab to git. If you get the following message when pushing or pulling: firstname.lastname@example.org: Permission denied (publickey), then execute this command in your repository directory: git remote set-url origin email@example.com:namespace/project.git . (replace namespace and project by the appropriate values). Use git remote -v to check the current value.