@Hank21 Thanks for your reply, Here's my setup of my business and OMADA configuration : 1 x SSID 6 x EAP 660HD 1 x ER605 v2 1 x OC200 2,4GHZ/5GHZ activated Channels: I tryed to let IA find the best/...

@Virgo the signal is very good, I tryed to connect my self just under the EP. Many "wrong password" and then I can connect.

I got eight 660 devices on my business. I dont think its devices issues but more with configuration of them (I guess). @tplink need you guys.

@Silvaire Exacly the same issue. I found something interesting in my investigation. 90% incorrect devices connections are from iOS. Questions: Is there an firmware update of apple or tplink ? I tried...