When I changed some users' roles from member to Studio, the automatic invitation link for the Studio wasn't sent. I had to manually send them the invitation link.
- Studio | People | Users (Roles)
Users promoted to Studio roles (non-custom) were not sent an invitation when they were promoted.
As a workaround, manually send a Studio invitation or advise Studio users to sign in via SSO or by resetting their password.
Please check the current status of this issue on the Known Issues Tracker. (Issue ID: CSUP-2825)