jcampoli
I don’t think it bans them, it just deactivates them.
If it takes the SIM and the IMEI and lets you pay for it, the problem probably isn’t the SIM.
Have you double-checked to be sure that the camera/SIM you think you paid for is the one that you actually paid for? More than once, I’ve gone to pay for a particular camera, even chosen that camera, but then discovered that I was paying for the camera immediately above or below. Make absolutely sure that the SIM you are using is the one with the active data plan.
What happens when you take/send a photo manually? What does the screen say?