You are considered a Self Tester if you are on the account alone or only have accountability partners.
Adding a monitor to your account or changing the role of an accountability partner to a monitor will automatically switch you from being a self tester to a tester.
Once you make the required change, please log out and back into the app for the change to your role to apply.
Please see the linked articles below on how to change a role or add/remove a connection.