Who I have the same questioned this topic

I have 2 kids on the just kids plan, which inludes smart family premium. We set it up a week ago and things were working perfectly fine, until yesterday.  When I checked my phone first thing in the morning, I had two texts that said the kids phones had been unpaired. I go to pair them and I have re log in to the app on my phone.   Now I can't log in, it states that my line is not eligible for the service and to call to change my plan?? I've called and a ticket has been started, but this is completely ridiculous that I purchased a plan that doesn't work!!!  No one can seem to figure this out, but it's obviously a problem with my phone number/account and this service.