Garmin HR monitor not connecting to Ant+ on Mac

I have been trying to connect my Garmin HR monitor to Zwift on my Mac. I have an Ant+ USB dongle plugged in (confirmed it is being recognized on my computer). When I try to sync the HR monitor it just continues to search. I am wearing HR monitor and can confirm it is connect to my watch. I have also deleted and re-installed Zwift on my computer. Any ideas? Been looking through posts and can’t find a solid solution…