Ncdata default dir?

I have a ncp running since 2 months. Works Great.
Did a n backup last night (70gb) and then I could not connect so I did a restart.
Now it cant find my datadir and wants it to be my cloud drive but I used The default path name from The installera for a usb drive.
I can not see any backups. They are on an other usb drive with other name.

If I change The path in ncdata it does not change in system info.

What happened? What to do? What is The default usb datadir?
Can I recover The files using Windows 10?
I can see The drive using ssh df - h and The drive is there and there.

Im a noob