Almost any router will work for basic connections. It is sort of like picking a make/model of a car. Find one that meets all of your current needs and your future needs. For example if you have a...

First be sure you are getting IPv6 from your ISP. Connect your computer direct to the modem via Ethernet cable and check to see if you are getting IPv6 using one of the many test sites. When I set up...

What model TP Link router do you have and the version number? I would start by resetting The router to factory specs, connect it to the modem, and re-enter the setup so you know what you have.

If you are referring to a wired connection, the C60 only supports 100 not gigabyte LAN ports. see https://www.tp-link.com/la/home-networking/wifi-router/archer-c60/#specifications.

@sbandei Try it as you have nothing to lose as it does sound like it is "Bricked".

Try re-seting to factory and reenter your settings.