Every time I try to send a push notifiction through the production server, for my TestFlight deployments, I'm getting back this:
HTTP Status code was 400 with response: '{"reason":"DeviceTokenNotForTopic"}'
I've verified that my identifier in the portal matches my bundle's app ID, and it's the same value I'm setting for the topic. When I tested this with the dev server the push notification was coming through.
What kinds of things can I look at to try and solve this?