Q: when trying to transfer my cellular from one ipad to a new one i get through the step where it appears i log in and then get stuck on the next step to choose a plan. any ideas?

I am trying to transfer my cellular plan from my old ipad to the new one and get stuck after the second step. I currently log in, choose the plan which is the same as the old plan and nothing happens from there. The only way to get out of the screen is to cancel.

Any ideas?