This is my first time reporting bugs.

I play on Pocket Edition for Amazon Kindle Fire, and I updated to 1.12.0 two days ago. Yesterday, I had gotten a ton of invites from a friend into their game, but I never got the notifications. Plus, if my friends are playing Minecraft, I am unable to join their world mainly due to their worlds not showing up and due to invites not working. None of my invites are reaching my friends either.

If there is any way you could fix this, please let me know.