@Christofferol For your information, the TL-WA855RE supports access point mode; that means you can connect it to the main router( ethernet port) to boost wifi signal. Below is the instruction:...

@YugeSupport We can do some troubleshooting to narrow it down and try to fix it. Have you ever tried to use the DNS obtained by itself automatically? Or try to change it to 8.8.8.8/8.8.4.4 to verify...

@NDK How do you connect the DVR to the Deco network? By wired cable or wireless? It seems that the static IP of the DVR is the root cause; try to change it to dynamic IP on DVR; if you need fixed IP...

@broxtor I see, thanks for your reply. There is a beta firmware which can be used to solve this issue; you can install it and verify whether it works. I will email you that, please check your inbox....

@xtremerox Thanks for your valued reply. Sorry for the mistake, I may typed the information which mentioned by other users. Back to your case, cause the channel may change to N/A, try to fix it, like...

@guicadier You are welcome, glad to help. Best regards.