Hey, @wfscott
Thank you for taking the time to look into this. I did manage to import products with Wordfence deactivated (no “Connection error!”). Unfortunately, I don’t see a new entry in the Live Traffic log when I try to import a product, even with “All Traffic” logging mode enabled.
However, the good news is that enabling Learning Mode helped solved this issue. I now see that it has allowlisted the URL that I needed to enter into the import extension and its parameters. Everything works wonderfully now. Thank you for the help, Scott. Have a wonderful day!