My iPhone Is allowing me to send Imessages to everyone besides on person. I am not blocked on this persons phone, I've tried restarting my phone, I've went to settings, to send and receive and made sure my number was checked, I've deleted the thread and the number out of my phone and tried it again. Nothing has worked, if anyone has any ideas or suggestions I'm totally up to hear them ! Thank you !!
iPhone 6, iOS 11.2.6