@Hasayeret Hi, the Deco X75 units in the same package should be pre-configured so usually we don't need to manually add the satellite Deco X75. How about the LED light on the second Deco X75? Is it...

@Charles_Chow Hi, welcome to the community. It is suggested to refer to:Unable to connect to the Internet Wait for your reply and best regards.

@Ans-Ras Hi, Welcome to the community. Please try to power restart the whole Deco mesh system once. If the LED is still solid red, please refer to Unable to connect to the Internet Thank you very...

@ALTP Hi, I noticed you mentioned Deco X10 was connected behind the Signel ONT router. Maybe you could try "Dynamic IP" only without VLAN IDs to see whether it helped. Wait for your reply and best...

@Francesco82 Hi, Thank you very much for your feedback. It is suggested to install the beta firmware here on Deco X50 to see whether it helped with the current issue: Optimize The Overall App...

@TomBabylon Hi, welcome to the community. Have you tried to switch the power adapters of the two Deco X10s(maybe also plug into a different power socket), and hold the reset pinhole again to see...