Symptom: REBEL won't connect to NTRIP RTK network (i.e. Digifarm, MyWayRTK, CORS).
Cause: REBEL isn't connected to WiFi on a mobile Hotspot.
Resolution: Confirm your cellular Hotspot is turned on, then press red WiFi button on lower right of REBEL display and choose the network you want to connect to. A one-time password entry may be required and can be found under the device's Mobile Hotspot settings.