Nate, try removing and re-adding the CC, then doing a “top-off” or enabling auto top-off. That worked for me. My CC on file was also fine (not expired), BTW.
My account was suspended and I still have two months left on my plan (6 mo pay in advance), plus my card IS NOT expired! You have 24 hrs to fix this or I will be reporting you to the BBB and starti...