After signing up, request invite does not work?

So, after signing in into my. sketchup to try Sketchup online, I entered the page where I could either launch or request invite.
Pressing the invite button results in a windows where I must enter my email address, first name and last name ( Why?). But after answering these three rather simple questions, I get a arning not all fields are answered…
Any thoughts on how to get an invite sorted out?

The invite is sent to your email account. Use the same one you are using for the forum login.