I wouldn't read too much into those status. Mine still says processing even though delivered Jan.23. Came through a delivery company called Intelcom. Maybe try checking your spam folder for delivery notifications?
Having the exact same issues as others have mentioned. Tried your delays.txt file but no change. I have an LTO and a Harmony for Atari so I thought this would be a similar easy to use multi-cart. Do you have a test bin/cfg file that should work that you can share?
Guaranteed it’s the TV. You could either mod the Intellivision for component out, or try picking up a cheap/free VCR off Facebook marketplace and run it through that to see if solves the issue.