@Dy1an77 Good day, Please refer to this link to do a firmware recovery on the Deco M5: https://www.tp-link.com/support/faq/2958/ Thank you very much.

@JRSmooth Good day. The database of the Home care-antivirus/parental control is updated by TrendMicro. https://global.sitesafety.trendmicro.com You could try to send a feedback to add it to the...

@Braun Hi! For the device key, did you mean the wireless password or the WPS Pin of Deco M3? Can I have a picture when the device key is required? Thank you very much.

@Eimear8 Hi， May I know how long have you had the deco and when did this issue start? Have you tried the firmware recovery? https://community.tp-link.com/en/home/stories/detail/672 Thank you very...

@sirhc777 Good day. What the color of the LED light on the main Deco? And who is your internet service provider; what kind of internet connection type did you use, dynamic IP, PPPoE, or something...

@kjp28 Good day, Did you enable the IPTV service on the main router? If yes, then there would be no internet from the second Ethernet port of Deco X60 since it Is reserved for the IPTV service. And...