Use your system url to login to admin panel. A system url looks like this
if you don't remember the system url, please let me know the site url and I will tell you the system url.
Yes, I require the URL for the system.
The only site I see in your account, is http://firfstreserve01.businesscatalyst.com/Admin
if this is not where you are trying to login, please let me know the exact url, so I can give you correct system url