@wailun Except Archer C8 said, can you get internet from the Archer C1200 when the internet led shows orange? Try to ping 8.8.8.8 at that time and show us the results. If it works well, try to change...

@Lundeborg The wireless network name and passcode of the Deco E4 can be changed, you can access the Deco app to do that. For your second question, it relats to the device itself and the modem/Deco E4...

@Thor007 Was it working well before? When did you have this problem? May I know if all the clips cannot be played with the error message? Have you ever tried to power cycle or hard reset it? What is...

@Kam73 How many Deco do you have in total and how do you connect them together? When the Deco stops working, can you get internet from the modem directly? If it is PPPoE connection, you can setup the...

@Norm55fr That is a little weird, after you finished the configuration, please login to the web UI of the RE450 and show us a screenshot of the Settings-status page. And what is the current hardware...

@jhondember24 Thanks for your valued reply, it helps a lot. Best regards.