@mahmoun Hi, Archer D9 has been end of life for almost 2-3 years I think. It is unlikely they gonna provide a new firmware or add new features on it. Best luck for you.

@Marale7379 You can refer to this troubleshooting guide: https://community.tp-link.com/en/home/forum/topic/539756

@PaulMeijer Hi, you could try to turn off Fast Roaming under Deco APP>More>Advanced and check the WiFi password to see any special characters, such as $,@,&the Ford car might not be able to recognize...

@Renard Hi, I see there is also an Open SSID-Deco-1994 and have you checked the MAC address of this flahing blue unit to see whether the last 4 MAC is also 1994? And I noticed you have reseted it...

@Renard I see on the user manual flashing blue means ready for setup and I think this E4 might auto reset itself occasionally. I think you could try to set it up as the main Deco to see if the same...

@RoPe I see they mentioned Deco X50-POE will come out first, then Deco X50-outdoor. You could expect Deco X50-POE this year and as for X50-Outdoor, I doubt there would be a long way to go.