Lower thirds

Hi, as a church we have been trying to setup Presenter with atem mini pro for our livestream service. We are having trouble setting up the lower third for the stream while having regular screen on main output.
We have setup the main audience as display 1, stage display is display 2, we set a third screen as livestream and I made a template for lower thirds in songs. But when I select the livestream to display Window ( as a display 3) as per YouTube video, nothing happens.
Can you help me figure out what is wrong or what we need to do please? Thanks.

Hi Julie. Please email [email protected] with a short video of what you're experiencing.