Jetstream add member permission

[StrangerGithuber]

Hello
I tried to open a thread on the jetstream github and I was redirected to this github.
I hope that I am asking in the right place my issue.
I tried to add the "addTeamMember" permission because I saw in the blade file that needs if the member wants to invite new people. I added to the editor role for testing and it didn't work. I can't add new people to the team with the test account. It is same if I add the test account as administrator. I can't invite either way new people to the team.
What can be the problem?