After checking my saved passwords from my browser, I know that I have logged in earlier with just username and now the site requires to log in with e-mail address. There's the reason I can't log in anymore. Might also be that I have not added my e-mail address at all or just invented some address at registration...
Correct, you now have to log in with your email address at
http://btb.scrypthp.com - if you send me your username I can check what the associated email address is. Unfortunately you won't be able to reset your password if you don't have access to the email. I'm sure there's a way for me to change the email address on the back end but I'll have to figure it out if you need me to.