Hi Frank,
It sounds like you are trying to manually configure the software. There is a much easier (and more efficient) method.
Download the latest software from...
https://pilotaware.lode.co.uk/downloads/OGN/PilotAware-OGN.latest.zipYou will currently get version 20200714 -
please don’t use your pre-November 2019 version - it doesn’t contain the network or auto-update software.
Load this onto a fresh or fully reformatted card, install into your Pi, power up and leave it to unpack.
Log into the pi..
pi12345678 (or later your own password if you’ve already set one)
Change directory (just type the bits in bold and hit [Enter])
cd rtlsdr-ognThen type...
./PilotAware-OGN.config.sh (in this step OGN is in caps - as are the 'P' and 'A' in PilotAware)
This will automatically stop the rtlsdr-ogn service (which will be what is stopping your attempts) and lead you through the configuration process.
If you make a mistake, complete the sequence then power the Pi down, restart it, log back in (using your new password if you have already done that bit) change directory as above and re-run the config script.
Much easier than trying to stop/start the program and configure the files manually.
Best Regards
Peter