My Messenger isn't working on iphone, ipad or mac.why

Yes I know I have way too many Apple products but that's not the point.
I can log in to my messenger on any of them but I don't receive messages nor do they receive mine.
I get the notifications of a new message on my phone but when I open the app, it doesn't appear. What can I do? I've tried re-downloading on my computer and deleting and re-downloading on my phone. Nothing worked.

How to retrieve deleted text messages?

I had an iphone 5, received some texts but then that day switched to a brand new iphone 5. And now i lost the texts i received right before i switched phones, is there a way to get those back? I thought they would be on the sim?

Could I use my iPhone on an airplane?

Hi I'm flying KLM from Salt Lake City to Amsterdam this week and I was wondering could i use my iPhone on the plane while on airplane mode? Do I have to turn it off?

Companion creature MMORPG's?

I like games like pokemon and such. Also like runescape, with the quests and many things to do.
Recently I've been playing a game on the iPhone called "Battle Camp" where you get monster companions to help you advance further through the game, meet people, and accomplish quests.
What I'm asking is, are there any multiplayer rpg's like this? Like a pokemon game, but it doesn't end after you beat a boss, and there are other people in it.
I love the whole companion creature idea, and if anyone knows an mmorpg similar to what I'm asking for, it would be much appreciated.
(like getting stronger and evolving your monsters)

ITunes isn't showing my bought songs?

I frequently buy music off of my iPhone 4s because it's more convenient and I don't have to wait to transfer music. But I just checked my iTunes on my computer and none of the songs I've bought on my iPhone are shown bought on my computer.

I'm using the same account and the most recent iTunes. I'm using the same credit card to buy songs as well. I've authorized my computer and iPhone.

Does anyone know how I can fix this?

How to sync my iPhone to my computer?

I just got an iPhone 4s & I plug it in to my mac and it says "The iPhone can't be used because it requires iTunes version 10.6.3 or later. Go to www.itunes.com to download the latest version of iTunes." when i go to iTunes.com and push download iTunes 11 it tries to make a whole new account and stuff. I just want to update mine! What am i doing wrong or how can i do it another way