So I have a app uploaded to testFlight and i am trying to send push notification to all the users. Some of the users are getting the notification and some are not. So i tried using a third party tool(Pusher) to send push notification. But still i get the same error
"apn invalid token".
I have checked the code many times the token is correct.Also even if I use the same token, sometimes it gets the notification and some times it says invalid token. I know these question has been asked but none of them answers my case because the token is not expired also certificates are properly created.
