Hi Frank,
See if you can send us an error log to info@flasherize.com and we'll have a look at it.
When I try to log in to the chat on your site it seems to hang, so likely something is not configured correctly, perhaps the wordpress database prefix? The error log of your host should tell.
The control panel will only list the admin account when in integrated mode, this is correct.
The reason is that all other users are in Wordpress. The admin user is only for logging in to the control panel. Users use their Wordpress accounts.