Hi,
some docs pages states that setting a team managed Jira project to Private Access is not available in the free plan.
Nevertheless I managed to create one. Not sure how this was possible but now when trying to create again an access restricted "Private" project, it is not possible anymore.
Here the screenshot of the "Private" one in the free plan

Can it be that "one" (1) project can be be made "Private" but not a second one?
And indeed, I created a new Jira Account and for the first Jira Project I see the option:

Thanks and regards
Dejf