This should have only required Retropex’s two apps: Bitcoin Knots and Datum Gateway.
I don’t know of one in the same form, but Connor’s Lab demonstrated it in this video here. He starts from a blank slate, though, so your setup will be slightly simplified. In your case you will have already done most of the initial configuration steps (like waiting for Knots to sync, configuring the block notify, setting the Datum Gateway password, etc), so you can skip the steps between and 1:47 - 2:45.
For the Datum Gateway service, do the health checks show any clients connected? In your case, it should show 1 if the ASIC connected.
For your Goldshell “Home” screen, what do you see in the Mining status section?
