I’ll check in the morning when I have more light to see if my router can switch to WPA2 instead, without breaking other devices on the system. So Rachio 3 can’t connect with WPA? That’s should be standard, why would it have an issue with it?
I’ll try this and the link you sent me in the morning and report back, I’ll need more light coming in to get at back of router and serial numbers and stuff to gain access to the back door security settings.