Why use ftfpd32 to update? Is it third-party firmware? Did you reset the router?

No access point or bridge on this router. Try set the Xbox as DMZ host, or open ports. It's quite common to have NAT issue on Xbox. Just go search you will garner tons of suggestions.

Seems router is bricked. Contact tplink support for solution

What's HW and FW version? Did you try on other computer?

What settings do you have from ISP? I guess you can refer to the installation guide to run quick setup. It will ask you to put in information from ISP.

I think the point is what you really need in those routers. For example, if you think speed or one feature is very important, then you compare two brands in that perspectives. They have datasheet or...