RPi 3 not connecting to WiFi channel 13

I have a multi-container system running on RPi. I have installations outside the USA and would like the device connect directly after boot to WiFi channels 12 or 13 if needed by a router at the installation location. I have been trying to test it with my European router configured to channel 13, but with no success. I have followed the instructions of giving country code in config.json -file, but it seems not to have any affect. Am I missing something or is there a trick to try here?

Hi, I will do some local tests and get back to you with more information.

Thanks,
Zahari

Hi, I finished investigating this and opened a new issue for this. You may follow it here: https://github.com/balena-os/balena-raspberrypi/issues/419

Thanks,
Zahari