To remove the wordpress folder you have to upload the contents of the folder called wordpress, not the folder itself (as I said earlier

) and then remove the file that redirects to that folder, I believe you've done
this here
You've parked the domain straight ontop so I think to get to wp-admin you will always have to use the sub domain address.
For me I'd just open a new account using your domain name and move to there (upload wordpress (the contents, not the folder) to it and import the database there too)