How do I know a gateway is operational?

While the application’s and device’s Data pages in TTN Console are nice, they often just do not work for me when I have one open. So, just to be sure you’re not running into problems with TTN Console not updating the Data page (even though you have it open):

You can simulate an uplink to test that.

Lacking the above:

  • Keep an eye on the device’s Status (click its value, if any, to see an exact date; for OTAA devices this will also be changed if an OTAA Join Request was received and accepted, even if the device did not receive the Join Accept), and Frames up counter.

Also, did you try a low data rate (high SF)?