@AndriusVs Thanks for your information, we checked the system log attached, no useful information found. We will do further analysis to locate this issue and try to fix it. 1. How many devices...

@rehanhanif1991 Hello, what is the led status of the TL-WR841N when you lose wifi connectivity? What about other wireless devices and wired devices? Do they work well at that time? How often does it...

@adsf Thanks for your information. Considering the Archer A2300 loses network connection regularly, we can do some troubleshooting first. 1. What is the current network diagram? Is there any other...

@fmmod Thanks for your information. You mentioned that the router completely lose wired download speed, which is a little weird; could you please connect your computer to the C5400 by wired cable...

@c7b3rx Hello, did you choose PPTP as internet connection type on the Archer A9 to make it access internet? Please tell us the current network diagram. Where do you use the Nordvpn? Please list some...

@Davidstockle Thanks for your reply. You can try to enable guest network and verify whether you can connect the smart home devices to the guest network, and you can enable guest network as open wifi...