Ok I checked again. The landing page at https://www.cloudflare.com/en-gb/products/workers-kv/ both the main `Sign Up` and `Contact Sales` buttons point to the same contact sales form so I guess I clicked on that Sign Up button when I wanted to try it out. This doesn't happen in the other Sign Up links, like the one up right and the Get Started links in the pricing/overview pages. They go straight to Sign Up. I will try to file a ticket if I can.