Hi guys, I got one of these last year November

And a couple of months ago, I think two months ago I had to reset my laptop, and the wireless adapter stopped working ever since.

I can get it to work in the USB 3.0 ports with some adjustments but no matter what I do it just won't work in the USB 2.0 ports. The light of the receiver just won't turn on in 2.0 ports. I have original bill and it also says it has a 1 year warranty. but I have no idea where I should take it, are there any service centers? or I should take it to the seller? Is there a way to fix this?