So, to get into AA meetings, you don't open Zoom first and then enter the meeting info and all of that. Instead, go to the aatoronto site, find the meeting, then click on the link to join the zoom meeting. It will open Zoom and connect you to the meeting. Sometimes there is a code to enter (different than the meeting ID). If a code is required then the code is in the info near the link to join the meeting. Hope that helps.
I'm really happy to hear you're trying to get into a meeting WL. Way to go!