I've configured all the request permissions aspects and when permission is granted to my web app the device token is returned and I save that to my db.
When I try and send a notification with this tool (https://github.com/onmyway133/PushNotifications) or from my serverside code with this library (https://github.com/genesluder/python-apns) using either token or certificate authentication APNS returns a 200 OK sent status.
However, my Mac Mini (running BIG Sur) doesn't get the notification. There is nothing in the response from APNS indicating any kind of error so I have no idea how I can work out where the problem is.
Any debugging advice would be welcome please.