@Zolteg my issue was different and I solved it! The mesh system did provide 2.4 and 5, and the Rainbird controller should have been able to find the band it needed, but there was another app...

@Sai_R It's my wish to get my rainbrid controller app to work. I just have no idea how to do what you are suggesting. HOW do I check router config, and HOW would I set it to 20MHz (if that is what...

@Sai_R what does that mean, or rather how do i set the 20 Hz channel width? (And how are us average users supposed to know about all this?$) what I also don't get is after it (hopefully) connects, I...

If the controller info specifies I must use 2.4 band, should/can I try to setup controller with the wifiname2.4 Wi-Fi network selected on my phone or just the wifiname network? Should I go to deco...

@David-TP, no special characters. Just letters and two numbers. Fast roaming was off. Just disabled Beamforming. Tried setup again (on regular 2.4 and 5) but got hung up at same place.

SOLVED!!!! I have T-mobile for cell, and have an app called T-mobile Wi-FiSecure (VPN) which caused the issue! When I turned it off, the rainbird app worked fine. (See pink image.) I have a Rainbird...