Why is my iPhone 4 not receiving iMessages

So for about a week now my phone will send iMessages but it won't receive them. So I have tried turning iMessages off then back on I have tried turning my phone off and on and I don't know what to do know. Please help! I can add details if needed and any answer is much appreciated.

You should check your message settings… I had a problem were i received messages from another account… Checking mines now… Go to the send and reciev section and see if your selections are correct~

You should check your message settings… I had a problem were i received messages from another account… Checking mines now… Go to the send and reciev section and see if your selections are correct

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