Controller won't link

If none of the buttons work I'm afraid you won't be able to troubleshoot it which is why you will have to follow what's mentioned in the link below to have it replaced if it's still under warranty:

The link: Request an Xbox controller replacement | Xbox Support

I am having the exact same problem I only have one controller so I can't do the right trigger and y it links up but won't link up right idk it's retarded please help

There are no repair/replace options for any controller that are out of warranty. If you want another Elite Controller you will have to purchase it. If you want to contact support which won't really help you can use this LINK.

Hey try going through the options in this link https://support.xbox.com/en-US/xbox-one/controllers/wireless-controller-solution the major one I find is that your controller Firmware is out of date. You can update by plugging in controller direct to your
Xbox then go through the settings menu, kinect and devices devices and accessories then check firmware on controller and update via there. There is a guide in that link how to do it exactly if you select the my controller won't connect option then yes to works
when plugged in let me know how you get on!?

The warranty depends on your region, which is why I won't be able to tell you the warranty status of your controller but you can follow the steps mentioned in the link below to manually check your warranty:

Request an Xbox controller replacement | Xbox Support