I have a similar problem.
I have been using a TTN Node via Cayenne (DevEUI 0004A30B001E7A89) for years and it always works.
I have now added two new devices: LoRa/TTN/Dragino LGT92 v1.5 DevEUI A84041000181E93F and A84041000181E958.
Their data is visible in the TTN console but after setting up in Cayenne (double-checked all settings) no data arrives in Cayenne.
Is there any way of diagnosing why?