I am trying to configure GCM in iOS. I have followed all the steps and created all the certificates required for push notifications. While registering for push notifications, device token is returned which is forwarded to google server. However, registration token returns nil with error
Unable to find token in cache Error Domain=com.google.iid Code=-25300
"The operation couldn’t be completed. (com.google.iid error -25300.)
This was working initially, but suddenly stopped working. I haven't changed any p12 files or certificates.