Is it Deco's wifi password? If so, you can login to the Deco app go to more-wifi page to find it. While if it is the password for your cloud account, you can reset it on the cloud website....

Hello, Can other devices detect the host network? Please turn off 5GHz network and check whether the Android TV can find the wifi network. Meanwhile, you can turn off fast roaming and QoS to give it...

Hello, What is the current network topology? If all the decos become red at the same time？ At that point, can you get internet from the modem directly? How often it drops internet and how do you sort...

Hello, what is the model number of your product? Is it Archer C7? What is the current problem? Please give us a detailed description. Thanks in advance. Good day.

Surely we will do. Thanks for your cooperation and support. Good day.

blade909 wrote thanks for your answer. its a pity cant recover original firmware for such a silly mistake. really the problem was caused by poor comunication between usb wifi adapter TL-WN823n V1...