I am facing an issue with a Google Sheets to LOB (direct mail provider) zap. Everything works fine up until I have to put in the url for the front and back-end of the postcard. That postcard is sitting on the same drive as the spreadsheet, all the shared properties are ok (anyone with the link can view etc).
When I go to LOB to see the postcard, the image is blank. Nothing shows up for the image. Any help or has anyone faced this issue?