Contact sensors not appearing

Thank you for your advice. I did order that exact stick but my only concern is what about Zigbee? I don’t believe this stick controls those devices. Also of concern is that since I’m a newbie to all this, that transitioning out of ST immediately, I would wreck my automation and it would be a while before its up and running again. Once I get the stick and install it and reset my network, where do I go from there?