android - FCM add Instance Id to topics after removing from batch remove -

i subscribing events fcm android client , removing server side code when happens in backend database. based on have ome around situation if subscribe event event123 , based on factors instanceid api call batchremove call node backend remove person stop receiving pushes id. again client can re-join event android device. not work.

i tried call api rest client unable add person event group. 200 ok, still unable join group. when query instance id, doesn't give me event tried re-subscribe.

what's issue? missing something? or no instance id can rejoin topic?

update: have contacted firebase support , bug @ moment. not sure if has been released or not, have not been updated release status.