WOW sale not working online?

My wife just had to call because she got all the way to the paying part and it didn't have the 50% deposit. The person on the phone didn't say why. Anyone else have a problem booking online? She used all the links from her email.

My wife just had to call because she got all the way to the paying part and it didn't have the 50% deposit. The person on the phone didn't say why. Anyone else have a problem booking online? She used all the links from her email.

From past experience there is a code for the WOW sale that you have to enter, but have never found the code.