UE4 IOS Push Registration Delegate not triggering

Hello,

i have a plugin for UE4 to allow remote push notification to be received remotely on iOS.

however, UE4 is unable to determine whether i have successfully registered or failed, i have registered callback functions using UE4 FCoreDelegate class

i did some googling and found out it is an existing problem, but not really answered.

is there a follow up to this?