Hello @Bluefish91 , Thanks for your testing and feedback. May I know if your network topology diagram is as follows: ISP modem—Archer BE800—Archer BE550)))((( client devices └───DHCP Server (Note: —...

Hello@Lkb4 , Resetting can indeed fix many problems in many situations. I am glad to hear that you have finally resolved it. Please feel free to contact us if you have any further questions. Best...

@Delta09 , Great~ I am also glad that the new firmware can help~

Hello @Holiday25 , Yes, you can install it :https://www.tp-link.com/en/support/download/archer-be550/v1/#Firmware

Hi @Overthinker6969 , If you have tried the suggestions I provided before, and the 2.4GHz is stable. It is recommended to contact local support for further assistance.

Hi@Reda_Otrosh , You are right. The official 1.1.2 release does not yet include these new features. So you can install the firmware in this article for new features.