Creating a new user account will give you a fresh set of data to test with, and saves you the trouble of going through all of the steps individually. ProPresenter is available to all users if you installed it in the default location, but all of the other data is maintained within each user account.
You may also want to just create a new user account to test your issues in. If you are simply troubleshooting something, do not delete a particular file or folder, just rename the item so that it's in the same directory and easy to restore or delete later. If ProPresenter 6 is the only version installed, you can delete the Renewed Vision directories as well. The steps listed will leave the Renewed Vision folders intact, ensuring you don't affect any previous versions of ProPresenter that you may be leaving installed. The instructions below are for a full uninstallation of ProPresenter 6, including all user data and associated files.
For the ProPresenter 7 Knowledge Base, click HERE. This article deals with our legacy product, ProPresenter 6.