Can't log my website it

I put in the wrong credentials for an account that is not active....instead of the new account, which is active --in trial. Now, when I got to login after following the install instructions...and putting in the correct email / password combo --- and press takes me to a 404 page...and can't log in.... I've tried to delete the plugin.....I've cleared the cache... Is there something else I need to do? Please help. I'm just trying to get everything set up now and this is frustrating.

the site is I will, of course, be happy to give you login instructions when requested.