unable to place order

I am unable to place a Fusion PCB order. When I upload my gerber .zip containing all of the relevant files, the order total changes to $0.0 (if I change the PCB color the order total changes to $10).
No matter what I do, pressing the add to cart button does nothing.

I’ve followed the order guidelines here:
[unable to insert link!]

I’ve attached the zip file I’m uploading: kbd.zip (207 KB)

Am I doing something wrong or is the order website broken?

Sorry for the inconvenience.
Now the ordering page is fixed. Thanks for your reminding.