Original iPad AT&T cellular service
I have one of the original iPad cellular service unlimited accounts whose price was never supposed to increase EVER but obviously did. I used to be able to move my cell service between different iPads. Which was convenient as I could take the most appropriate iPad with me on the road. Recently, it stopped being able to switch between iPads. Now I cannot even open with the Manage My Account button on my iPad. There has been no notification of change in my service. There is no easy way to see what has changed with my plan. It appears when my iPad is no longer useful I will need to cancel my plan as there is no way to move the plan to a different device. Is there any link on the AT&T website that addresses the future of my data plan?