[SOLVED] Problem to connect my first NAS

[Blixa]

I spoke too early..
This morning could not to play files in NAS (no exist error), after a quick update of library NAS desappeared, seems like lost data for any reason.
I re-mount nas but nothings change, i had to delete and recreate NAS, then it works.

My network configuration: NAS wired to modem router, router to extender via wifi, extender wired to raspberry/moode.

I try to switch off and on router, NAS works, no data lost.
I try to restart NAS and it works, no data lost.

I check power options in NAS but it's ok, no factory programmed shut down or similar.

Any ideas about? Thanks and sorry for my english..