Cant send messages
I cannot send messages on iMessage, I already checked my internet and that is not the problem and I did put my phone number into the device for messaging and activated it ( I'm pretty sure ). I keep getting a " Not Delivered" message and I do not know why but I have looked up several solutions to the problem and none of them helped me in any case. Is there anyone that can help me?
iPod touch (6th generation), iOS 11.4.1