I have transferd my ios app from my account(AA) to client account(BB).for push notification in fire-base server we uploaded APN (private key) which is generated by AA. But now account is changed and also i am updating app with new account. So if i upload new APN generate from new account, older app will not support push notification. But however i read like " we can generate a APN which will support older and new app"
But how to achieve that..?
With old APN i tried to push notifn to new app which is signed/updated with new account i.e BB , notification is failing..