I noticed there are already someone got similar issue:
I have just switch to GCM from C2DM. However, every message I sent would got an "unavailable" error. According to the document, I should retry later. But no matter how many times I tried, it is still unavailable.
Is there anyone who has same issue as mine? I thought there is some error on my side. But if so, there should be some other error message instead of unavailable.
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