Update on this issue: The License Key Storage and the program's Enter license key dialog are now much safer. It's impossible to copy/steal the license key directly neither from the License Key Storage, nor from the Enter license key dialog.
So far, in version 5.1 we implemented mass connection properties editing.
In order to mass edit connections, select them by dragging the mouse pointer around them or using <Ctrl> or <Shift> + click, and then right click and select Properties just as you do when edit a single connection.
Thanks for the kind words. :) We will add knowledge base articles that describe issues with other software, especially popular programs, like TuneUp Utilities. People must know that sometimes it's a third-party application that blocks normal operation of RUT.