Servers by jDrones

Holybro 433Mhz Telemetry Mission Planner range issue

Hello,
I use the Holybro 433Mhz 100mw Telemetry kit. It works perfectly in default settings (range>400m). I tried to change the net ID using mission planner. As soon as I do this the range drops to less than 5 meters. I tried different things and figured out that it has nothing to do with the net ID. As soon as I press the save button on mission planner, even if I do not change any options the range drops. When I reset it to default settings it works fine again.

Do you have any idea how to solve this?

Servers by jDrones