We are very sorry for the frustration. It may be because you haven't entered your zip code in first. The zip code populates the city and state for you. It is very important that you enter the ship to name, the street address, then then zip in that order. Once you enter the zip code hit tab and it will then fill in the rest. The next step after that is the shipping phone number.
I recommend refreshing and starting over on the checkout page so it isn't "confused" any more. ;)
Try that, if it still doesn't work give support a call during working hours to place the order for you. 877-527-2460.