I actually just kept trying and ultimately was able to enter the details.
I checked the forum and see that other people have experienced similar defects. I don't know what happened or how I corrected it however.
I was able to make the payment so ...
Is the online payment system working today? There appears to be no option to enter credit card number. When I enter my expiration date and security code I get an error message that field(s) are blank - I'm guessing the blank field is where I should b...