Why does Remove 2 factor authentication open another form?
Where to find it: PREFERENCES → Remove 2 factor authentication
The button can require password confirmation before removing the setting. In PREFERENCES, select Remove 2 factor authentication, enter your current password on the next form and submit Remove 2FA.
Opening that form alone does not mean the setting has been removed. On success, MRA returns to the dashboard with a removal message. An incorrect password produces an error and leaves the setting in place.