and it still wanted to charge my credit card; even though, I have the dining plan; so, I didn't do it. I ended up calling instead and waiting the hour to do it by phone. I ended up with what I wanted with CRT; so, I'm happy and no credit card charge.
I had heard about this problem on other threads; so, I was very careful with every screen on line. By the way, this wasn't even the first one I did on line, either. It worked well for the reservations w/o credit card. I ended up calling 3 special ones (Fantasmic package, CP package and CRT) on the phone out of 12.
I'll share some other info from a dining CM. I called the night before about this very problem; because, I wanted to be ready for action. The CM mentioned I needed a 12 digit number (used for dining) that's connected with my Disney Travel reservation number. My Disney Travel number was not 12 digit and it had alpha characters. The CM was kind to me and gave me the other number, but in the end that didn't help either.
I think the on line dining system will get better in the future. You just have to be careful, right now. There's another thread out there that is talking about another problem happening with the on line dining system, right now.