I have an ISP supplied router, one ethernet port connected by cable to my desktop (Apple), another ethernet port connected via cable to a separate WIFI router (Apple) in another part of the house with line of sight to the OpenSprinkler 3.0.
I can control the app via my desktop, but not update the firmware from my desktop, I had to get out a laptop connected to the WIFI router.
I must have to change a setting to go through two routers. Looking forward to setting up remote access 😉
Good clean fun.