parental consent with credit card error - done button greyed out
I have tried adding my son to our Apple ID family probably 100 times on several different devices. Practically the first step is to give parental consent with a credit card. I have entered the credit card information, expiration date, billing name, address and phone number but the done button on the top is greyed out. I have entered all of the information on the page, why can I not just click done, and continue to set up my son's ID? This has been a HUGE pain, I am extremely frustrated. I did not have any issues a couple of year's ago when I set up my other children's accounts. If anyone knows how to continue the set up, I would appreciate it. OR if I can set up using a chrome browser I would be willing to try that too! I have already tried that by starting in my Apple ID, but it only lists my family and does not give an option to add anyone.