I have a current subscription and 75c. Credit on my card but this makes no difference since I can’t put in activation code. When I tried chat it was during working hours, 11 am .
Trying to install a replacement sim for an iPhone 6( moving from an iPhone 5) did not work. “ the SIM card that you currently have installedis is from a service provider that is not supported under activation policy” “ insert another SIM card from ...
Advice to try different approaches was helpful. Trying to nput manually did not work. I then reset network settings and that worked. I think I could have removed the sem card but I was slow to do that because doing it on the iPhone is a real bother.