Thanks for getting back to me. It’s a usb data-only 4G dongle with its own SIM card. Pic attached. It’s powered by a dedicated usb cable and not by the FX unit. I think it takes a few seconds longer to fully boot up than the FX unit so potentially its SSID is not visible to FX when FX powers up. However FX does not appear to keep scanning for known SSID’s and automatically connect if a previously registered one appears.
You are correct, the FX does not continually scan, there is a very good technical reason for this to do with performance.
Once powered up it will perform 3 scans, then it will revert to a manual connection mode.
Can I ask you to try the following sequence
1. power up the 4g dongle
2. confirm you can see the 4g dongle ssid from a device - eg iphone, ipad
3. power up FX
Does the FX now connect to the 4G device ?