@Alexandre. After testing, it seems that the message appears for every deco that I try to change his source...

@Alexandre. Thanks for the quick reply, I tried to do that, in addition I tried to remove from the network the same deco that I can't change the source and add it again, or reboot the whole network....

hey all, my setup : main deco - Deco X20-DSL firmware 1.0.4 build 20210807 Rel.46250 and 3 deco M5 slaves on firmware 1.6.0 as mention . operation Mode : Wi-fi router . its seems that one of my deco...