1) Make sure that the SpryAssets folder is also uploaded to the server.
2) Send a link to your page and attach a copy in a zip archive and I can give more info on why the agree to the terms message is there and how to remove it.
3) Go to the Server Behaviors panel (Window -> Server Behaviors), and double click the Universal Email server behavior to edit it and set a Go To page, this will set Universal Email to redirect to a confirmation page after the email is sent.
4) Universal Email creates a template file for the email message in the webassist/email/templates folder. the Lorem ipsum text is place holder content included in the default template, you can edit the template file to remove it.
5) The error messages you are seeing are because the host has safe m ode turned on the php.ini file. Universal Email cannot work correctly on servers where safe mode is enabled.