It is designed to only ask for registration information if the email address and key entered are not registered. I guess I’d need more details about what you put in for me to figure out what went wrong. Feel free to PM me your license key and email.
There are merely 11 different files you could have downloaded for each of the 11 languages we support. It is possible, but unwieldy, to list all this information on the first page of the download. I’m inclined not to do it, given how infrequently it would be useful to people.