Sorry for the delay in responding to your advice. So, two things were working against me that I finally figured out: 1)My browser settings were directing all downloads into my "Downloads" file automatically without "Save" or "Save As" prompts. I changed that and now I can direct the GPX files into my Garmin\GPX folder. 2)I use Opera as my browser and it must not be compatible with Garmin Express because I do have the updated version installed, however it would never open when I attempted to download a list, even with my popup blocker turned off. When I tried the same procedure on Microsoft Edge, it worked perfectly.
Thank you for taking the time to offer your help!