1.2. When opening a saved profile I get the message that it already exists

In the dialog window labelled "Select folder with DigiLock profiles" you only need to navigate to the folder containing the desired profile and then click "Current Folder".  In the subsequent window labelled "Open DigiLock profile" you should select the individual profile to load.  This error is generated by double-clicking an individual profile in the first window.  See screenshots below.

After clicking the proper button you will be presented with the following dialog.