Dear @David-TP , Thank you for your feedback. I can change SSID name (from BBP to Solaris) on Deco APP and can connect to new SSID "Solaris" from my iPhone and PC but after changed SSID name, strange...

Thank @David-TP for your quick reply. As you advise, I tried power off 2 satellite decos first then power off main deco lastly. Even when I completed power off 2 satellite decos, these SSID are still...

I installed 3 Deco M5s in my house 2 months before with Giga Ethernet backhaul. Recent one week, I incidentially saw WiFi available SSID list on my iPhone, also in my Laptop, some new SSID beside my...