Automatic Control Gitlab
New user accounts need to be manually approved to avoid spam account registrations.
New users who want to sign up for an account and do not have a well know email address domain such as lu.se, lth.se, or from other well-known academic institutions/organizations/companies, are encouraged to send an email to email@example.com explaining briefly why your email address should be approved. After you have registered an account here.
This especially applies to anonymous gmail addresses, as such have been extensively used for spam account registrations in the past.