Fundamentally it either wasn’t heard by a gateway or didn’t hear the gateway’s response. You could try ABP as a quick test - that is sending blind and doesn’t need a response for anything to appear on the console.
I’m in Bolton, which is sort of like Lancashire but not. Where (roughly) are you so we can look at the various maps to see what is likely.
The reality is that all across the forum you’ll find recommendations to debug with your own gateway, but let’s see what we can achieve first of all.
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