HMWP keeps changing wp-admin

Aha! I figured out how to get back into the dashboard… sort of.. well, I figured out how to disable plugins and get in (one particular plugin specifically “Hide my wp”)… as far as I can tell, HMWP works fine, except after I login, I get redirected to a non-existant page. I can see the admin panel thing at the top but no matter what I do, it wont take me to the dashboard. I can’t get at the plugin to fix whatever I did wrong.

Also, I seem to remember something that needed to be added to the wp-config file (as well as the htaccess file) but at the time I installed this, I didn’t have access to the correct ftp. How can I fix this?