iMessage Suddenly Broken
I dug out my iPod Touch 5th generation again after preparing to sell it (and giving up) and restored all my stuff back onto it, including linking it with my iCloud account. Also, I previously used my family's Apple ID but seperate "Send and Receive" addresses so we all could just use iMessage without messing with making new Apple IDs, etc, but I made a new one to make my own iCloud account to clear up some issues a few months back. So I have been happily using my iPod and iPad, iMessage has worked on both, everything was fine. However, I was using iMessage when on my iPod, and the battery died so I went and reached for my iPad, composed the message again, and tried to send. Immediately, "failed to send". I then exit the app, re enter and I am completely signed out, I try signing back in, "iMessage Activation" "An error occurred during activation. Try again" I finally manage to sign in again on my iPod ONLY, iPad still won't work. I find out that the email other than my Apple ID email in "Send and Receive" completely disappeared. I wasn't using my Apple ID email for send and receive because it isn't the email that I used previously for iMessage, so I wouldn't be in people's contacts. Anyway, now I'm trying to re add my old send and receive email, but it gets stuck in validating, I receive no validation email or anything. I have tried restarting, etc, no luck. My iPads date was off when I first reached for it, which may have caused the issue, but I fixed it, then proceeded with the steps I mentioned before. How can I fix iMessage??
iOS 7.1.2, iPad mini with Retina Display