Per I read, there are some instructions to setup VPN on this Archer C9; https://www.tp-link.com/en/faq-1545.html & https://www.tp-link.com/en/faq-1544.html While this surfshark vpn is a 3rd party...

Cause the Archer D2 is a DSL modem router, in order to connect it to another router by cable, you need change the operation mode to wireless router mode first. And then connect the LAN4/WAN port of...

you can contact their tech support to check the warrany policy or get some suggestions. https://www.tp-link.com/en/support/contact-technical-support/#Hotline-Support

can other devices get internet from the VR600 by wired cable? If they work properly, then the root cause may be the NAS. You can check the IP address of the NAS or contact their tech support to get...

The Archer VR600, as a VDSL modem router, can work with the DSL connection, while it is hard to guarantee the performance cause it is affected by the actual network environmnet.

If you want to configure the VR600v in the wireless router mode, after you selected the mode, you can change the LAN IP address to 192.168.2.1, subnet mask to 255.255.255.0, enable DHCP server,...