@cohenfive -- I usually refer to this as "rainbow lights" and indicates a bad solenoid has shorted out the controller. Our Gen2 controller would identify this as a zone fault.
Assuming no WiFi network settings have changed, which includes the name (SSID) and/or password, blinkup is not required. I'd recommend removing the front panel from the wall mount and power cycling the controller -- the WiFi light should start blinking a steady green within 1 minute, indicating it's connected to WiFi.
Removing the front panel from the wall mount and power cycling the controller to see if it reconnects to WiFi will tell us if you're experiencing a WiFi or valve/solenoid issue. As power cycling the controller will reset its WiFi connection and removing the front panel from the wall mount will eliminate any wiring interference you might be experiencing.
Some hotspots will time out (especially those running on a battery). I don't think we're dealing with a WiFi issue here, but appreciate the ideas! We'll work on creating a list of recommended hotspots for remote/limited WiFi use.