Is the device on the same wifi network as the site (on your VPN)? A lot of VPNs will block the traffic that makes Edge Inspect work, so unfortunately you may be out of luck. But if both the server and the device are on the same VPN network there may be a chance.
Thanks for your reply Ryan.
I work remotely and the iOS devices are not on the VPN—only the laptop running Chrome and the Edge Extension.
My work-around in case others find this helpful:
1. copy all the web files produced by ReFlow (html, css, images) to my local hard on my laptop (I used wget—a unix tool— to do this step
2. download, install and run MAMP (Mac-based web server) or WAMP (Windows-based web server)
3. use MAMP to host the folder containing web files from Step 1. and view them in Chrome w/ the Edge Inspect Extension
This is not a fast and easy solution but its one way to view the document by circumventing the VPN by hosting all the files locally.