How to get mounting plate off of back of Video Doorbell

[Omgitstony]

The original doorbell or the doorbell pro?

Original doorbell:

Wyze doorbell wall plate removal

I have not installed my Wyze doorbell but I attached the wall plate to the doorbell. How do I remove it? Thank you.

Doorbell pro:

How do you remove the Video Doorbell Pro?

I unscrewed the screw, and I’m trying to press down and up. I can’t get the doorbell to budge, and I’m afraid I’m going to break the mount if I push harder. Battery is about to die. Am I missing something?