Long story short, I recently got my number blocked on iMessage by a friend. I sent them a text and the text came out as blue, but the "delivered" receipt never popped up underneath the message -- typical sign of being blocked. Over the span of the next few days, I checked our chat and there still wasn't a delivered receipt, but this morning, there suddenly was one under the message I had sent a few days ago. I tried to send another message, but it didn't go through. Was I unblocked and blocked again, or was this a glitch on iMessage? If I was unblocked and blocked again, did the message go through to them the minute they unblocked me?