I know iMessage for iPad has been around for a while now but I have never been able to get it to work on my wifi only iPad 2. It is activated but every time I send the red msg appear "! Not Delivered".
Run out of options - but if someone can point me to a webpage that is aware of this problem that would be v much appreciated or therapy!
I can't supply a webpage but I had the same problem.
iMessage on my iPhone 4S and iPad 1 would not activate, so I had to do a restore.
I did restore as new phone or iPad. I didn't restore from a back-up.
Hope this helps,
If it does help, please select the thanks button.