@Nazham95 Do you intend replacing as well the 3 repeaters by 3 Deco X10? What is the issue with the C7? Insufficient coverage? Limited speed? What is the speed of your Internet connection?

@shabiu With different models than yours, it worked only if the "second" mesh (M5 in your case) is set with an operation mode = Access Point.

@HansBe I believe the Deco in not "in" the Omada network, and the Deco cannot be managed from the Omada environment.

@Meckser The XE75 have 3 Ethernet ports, two of them will be available as well.

@Printo Some Deco allow doing that: https://www.tp-link.com/en/support/faq/3833/

@HansBe So everything works well, the Deco is used to access Internet by all your devices? Your issue is limited to the fact that the Deco is not visible in Omada app?