Hello,
Ad. 1) To change ‘Contact us’ text please go to Location & Effects > Before opening > Toggler Tab > Define text shown on Toggler Tab or Button and change it there.
Ad. 2) The form is set to automaticaly fill in logged in user data, that also includes administrator users. To disable it please go to Email tab > Advanced > Auto fill in logged User data and set it to No.
Ad. 3) Make sure that you have correct email settings. To be on the safe side please clear all the email fields in Email tab, and in our plugin global settings set Mailer type to PHP mail function. If you still have troubles with it, please contact us through our support form on this page.
Best regards