@KomplexKris I should have asked if you plan to hardwire new Satellite Deco, so that it will be using Ethernet backhaul. If you do, I recommend Deco X50 or X55. In case Satellites will be wirelessly...

@MiguelVacas The logical conclusion from your description is that Satellite Deco can only negotiate 100Mbps over Ethernet cable to Main Deco. You should replace that Ethernet cable. To verify that,...

@latas2002 To avoid this issue in the future, turn off Smart DHCP feature under Advanced page in Deco app: Even with Smart DHCP enabled, you did not have to reinstall your Deco X75s again. The...

@KomplexKris In theory, all Deco models can work with each other, but in reality it is better to add similar Deco to existent mesh. Anything from X-series can do, but another challenge with Deco is...

@Tamiremuna Here is the guide: How to Set up the Satellite Deco or a new Deco to be the Main Deco

@Ivo55554545 You should connect PC or laptop directly to your ISP modem and check if perhaps your ISP blocks this site. Also, it usually helps if you could mention site name. Here in Canada I had...