Issues tab is missing!

Hello,
We have a self-managed GitLab instance running and everything works great. I created a test account on GitLab.com just to see how it works and noticed that there is an issues tab that I don’t see in our self-managed instance.
Does it have to be enabled? I looked and looked and couldn’t find a document describing how to enable Issues in a self-managed GitLab instance.
Any help is appreciated.

Thank you