Hi,
I was not able to reproduce the freeze. Also used Win 7 and have tried to connect to mapped drive from network location.
So, this is should be something specific for your environment or you have wait not long enough.
Maybe there are some limitation for enumerating shell objects, and because of that it stucks, but I have doubts...
Is that share needs authorization (password popup shown)?
About the registration: because of the big amount of spammers, on the forum is enabled verification of the mail, with check in shared spammer database. And probably you was found there, or selected by some heuristic method

Try different mail or email. If this will not help, write me private message with name of account and your email, and I will create account for you.
Best regards,
Alex.