@Tomas20 Hi, Could you please provide your network topology and your IPv6 settings? Besides, who is your ISP?

@dkmats Hi, Are all devices unable to connect to the WIFI? Is there any error message? If the WIFI signal is poor here, please relocate the Deco unit to better cover this place.

@Gerrard33 Hi, You can check the online and local stores if there are separate 9 series powerline units that support WIFI function sold in your area. If there is none, they may not sold separately.

@alex_3232 Hi, To confirm whether the speed you get it normal or not, please check the powerline rate. Explanation about the Powerline Rate and Actual speed of the Powerline Adapters Please refer to...

@Morris1990 Hi, Thanks for posting on TP-Link Community. Could you please provide more information about the issue you meet? When would this issue occur and is there any error message? How about the...

@ASM1 Hi, The two versions support the same functions and they have no actual difference. Please do not worry.