Great write up by the way, really helpful to myself.
I nearly bought (on line no refund) WD passport then found out it only imports the whole clip.
Then was told about the marked in and outs of gnarbox, now I sold on the item.
However your not having this experience with the gnarbox.
Question do you have the same when using an iPad ?
I don't have an iPad, so I can't confirm whether it would have the same issue or not. Lumavision has been able to reproduce the error using my files, so I'm hopeful that they can resolve the issue quickly. Really excited about the potential for the Gnarbox once I get this resolved.
BTW: If you're ever looking to purchase electronics online I recommend you check out B&H Photo. They are super helpful, have great prices, free overnight shipping, and a 30 day satisfaction guarantee. I've had only good experiences with them: https://www.bhphotovideo.com/