They are using two step verification on your account. You only have to go through this procedure once. After you do it, you’ll have a blue check mark in the mobile app showing you are verified.
Regarding 10 minutes,…do the verification step on the same devvice the Blink app is on. That way it takes about 3 minutes. 10 minutes is pretty generous.as Blink is assuming you have your email with the verification number and blink mobile app handy at the same time.