Why don't I have data on my call??

A

AC Question

I'm on straight talk (just switched) I got the Samsung Galaxy Note 5 on Verizon network they their BRING YOUR OWN PHONE PLAN using their SMART PAY. I'm paying monthly 1 pymt for phone and plan. I got the $55 10gb plan. I have 4g lte. I tried turning on Advanced Calling and it just says "we encountered a problem please try again later" Very aggravating!😬 I'm always using data on my calls and now I can't. Can anyone please tell me how to fix this as neither ST or Verizon have been any help at all. Thanks, Rhonda