Hi guys, it is not working to plug the M7350 to MR3020 with a USB cable. You can open setup MR3020 to client, repeater or WISP.

Here is an link for how to find the company a device belongs to: https://aruljohn.com/mac.pl It may be not very accurate. Very less network device will tell it is a metered connection...

Do you mean google updater service? You can try to delete it .

It seems there is no way to change the device name. I think it is not the device name but the mac address your provider recognize. From the mac address, we can know what manufacture a device belongs...

It seems the router block ping IPv6 from externally, but if the IPv6 still work, it has no much influence.

That's easy, almost the same steps as configuring the first one. Here is an instruction: http://uk.tp-link.com/faq-821.html