Desparate to get RPI 4 to save settings

[burgoynebc@netscape.net]

I have tried repeatedly to get RPI 4 running openplotter to save the configuartion settings.
Every time I power down, and after have spent hours setting up sensors, AIS rtl sdr. signal k, serial, I2C, alll setups are completely wiped out. Nothing gets saved.
Either a setup requires reboot to complete it, or I simply have to shut down overnight, on reboot I have to reestablish all settings.

Is there no way to save settings before  powering down????????????????????

Very fraustrated trying to upgrade to rpi after years running arduino autopilot and seaclear chartplotter. I must be missing something here but I have printed out everything I can find on the docs

Richard
sv Zolanda

[Sailoog]

that is really strange, has your SD card some kind of write protection? are you using the official OP images? have you tested another SD card?