Problem is solved -> 1/ I put my DECO system in AP mode (Access Point) in stead of Router 2/ I reset my internet provider modem 3/ I reset NAS Indeed my NAS has now a different IP than before. Thanks...

@Alexandre. Many thanks for this explanation Alexandre ! It truly makes sense. I did a full restart of the NAS a few times disconnecting electrical power. (I connected it to my different Deco units...

@TP-Link Thanks for the quick response so far ! I like that :) Hi, will you be able to see NAS as one of the online clients on the Deco APP? > Currently it's not listed as one off the 'on-line'...

@Cobretti302 hardware version 2 (instead of 3 mentioned above)

Hi everyone, Deco M9 Plus user since a few weeks. Main Deco unit is connected to my provider modem via ethernet cable. 3 other Deco units in the house. About 7 WIFI connected clients work fine and at...