Experiencing 'staingate' on my Retina late 2013 Macbook pro. What should I do.
I have only recently thought the stains on my screen are annoying and unusual, and when looking up my problem I've found that it has been very common with laptops like mine. Firstly, I bought this computer in 2013 (more than 4 years ago) is am I no longer entitled to a free repair? Secondly, have there been any verified DIY fixes to this problem. I found a youtube video showing someone using Listerine but I'm not convinced it will work.
Note : I've attached photos of my screen.
Thank you for any help you can offer.