How to create a serial??

For installing opensky in a docker container I would like to know if there to create a serial for the configuration files.

Right now I had to jump through a couple of hoops to get my serial, but perhaps I am mis understanding how to create a receiver, that is also a sensor??

any idea how to generate a serial on the website?

Hey, I left my serial blank and it got assigned one once I finished the setup. The receiver "sensor" just appears on the home page.. I deleted it all and tried again.. Same number appeared even though I left it blank in the setup. Hopefully this helps..?