Difficulty "popping" ball into mount bracket

Hello, all. I have a Spotlight Cam, and I'm attempting to install it today. I have the mounting bracket installed under the eave on my front patio, and the mounting plate on the cam is installed correctly with the ball up. Where I am getting stuck is inserting the ball into the mounting bracket. Everything I'm seeing mentions "popping" the ball into the bracket, but I'm really leaning into it and getting nowhere. Is there some trick to this that I'm missing? Thanks.