@VincentM Hi, Flashing blue on the Deco means this Deco is ready for setup; As for how to add the Deco, please refer to this link:https://www.tp-link.com/en/support/faq/1590/

@emmm Hi, Was this issue still here? If yes, could you please help me check the following information: Did Deco M4 work on the wireless router mode or access point mode? Were Deco units connected via...

@Bromf Hi， Sorry for the delay. Did you still have the same issue about the slow LAN speed on the Deco? If yes, we would like to check some details then forward your case to the senior engineers...

@Archydos Hi, please refer to this link to have a look: 'delete' will reset all the Deco units under this network;

@PandaPanda Hi, sorry for the delay. Did you still have the same slow speed issue on the Deco M4？ If yes, please help me check the following information: 1. Did both wireless and Ethernet have the...

@Gasworx @Barney666 Hi, our senior engineers have located this problem already with the help of some users; The issue is on the Deco APP, not the Deco device itself; And we will release a new APP...