I have run into a strange issue and a search of these forums hasn't helped. Rolled back from iOS 11 beta to 10.3.3 on both my iPhone 7 and iPad Pro (10.5). Now, I cannot get the code to have all messages forwarded and appear on my iPad. I have tried every combination I could find on the net to resolve this but nothing works. I simply cann't get a code on my iPad to put into my phone. Could this have something to do with two factor authentication? I consider myself pretty tech savvy but I am at a total loss. Anyone run into this issue and able to resolve it? I know it's kinda a first world issue, but I have actually come to rely on it to not have to have my phone on me all the time. Any help welcome and would be eternally grateful.