Why is my email address not being confirmed?
Are you unable to confirm an email address while testing a funnel?
Groundhogg by default treats the logged-in user's email as the priority email for tracking. This means if you're testing while logged in that no matter what email you are testing with, the email address you are logged in as will be the one used for tracking by Groundhogg.
You can disable this behavior by enabling this setting under Misc.
Groundhogg will now allow you to use the testing email as the tracked contact regardless of whether or not you are logged in.