Additional Files on My Passport Ultra are not accessible

I backed up two different devices, one set gave me the name of the PC and I was able to retrieve them. The other set of files are listed on the My Passport Ultra as Additional Files, however I cannot access them as it does not list a PC for them. How can I retrieve these? The additional files are in a gray shaded box

Hi Trains,

Maybe you should try contacting WD’s Technical Support about this.

To Contact WD for Technical Support

https://support.wdc.com/support/case.aspx?lang=en
The link below will allow you to call support if you are having trouble with the form.