AirPort Extreme: soft reset old data is not reachable....

I needed to change the WIFI password of my third party router, so I needed to change the password on the bridged Extreme and extended Capsule.

I lost the apple devices so I had to 'forget' them in the airport utillity and re-add them.

But the capsule stayed gray so I did a soft reset with the reset button.

so it connected and reachable but dat seem to dissapeared.

I miss 80Gb on the total of 2Tb.

How can I see/recover this data again? anyone?