you have to click on forgot password. you will get an email and then you have to change your pw. then it should be unlocked. the day you signed it at the pool, do you received an email from this pool ?
I did reset password, i got the link, i changed my password, it said "password changed please log in", i tried to login and it still gives me "Unable to login: Account is locked. Please contact site support." which still is saying "This product comes 'as-is' without any warranty. Please check the Apache License, Version 2.0, for details."
Do it again but set the password back to what you had originally and it will let you in.
The accounts get locked because someone's been trying to guess your password. We've all had similar issues and on the positive side it means they didn't get in!
I do agree it would be nice to see a pool with good support, even bothering to fill in that support page with contact details would be nice, but they tend to be one person on their own. It'll probably always been like that for new coins with no track record.