New user, can't download from Warehouse

I can get to the warehouse, but when I go to download, it says I have to sign in. When I use “signup below”, and fill in the blanks with my email, enter my name, and type in a new PW, I hit “create new account”, nothing happens. Internet connected OK. I’ve tried it numerous times, it accepts my “Captcha”, I hit “Create new account”, and the screen just sits there. A blue box says “A user with that given email does not exist”, which is probably true, because this is my first time signing in to WH for about 3 years. No emails generated in my inbox either. Windows 10, Sketchup 2018 Pro. Thanks!