Hi everybody,
I feel obligated to tell you about my experience.
First, I’ll give you some context. I’m based in Peru and bought my Surface book computer in May 2019 from Amazon in a vacation trip. After one and a half years of use the yellow tints appeared on the sides. Six months later the screen was bulged even though it broke the glass screen protector. I’ve contacted Microsoft support at USA asking for replacement, mentioning that I was going to travel to USA, and I’d wanted to be aware of the replacement process. They replied saying that my country was not supported by MS and that I should dispose my laptop. (link to the post https://answers.microsoft.com/en-us/surface/forum/surfbook-surfdrivers/yellow-tint-on-surface-book-screen/816b04a3-f6a4-4be5-a4e7-09983fd57230?messageId=19e06f2c-676f-464a-be67-5e2460c1db70&page=10).
August last year, I traveled to London. The first thing I did as soon as I landed was going to a Microsoft Store, because of all the advises on this post. I was lucky that Microsoft specialist who took care of my case was really worried about my laptop that he told me I must not keep using the laptop. He mentioned that he must do what he thought was right and talk to the supervisor to get me a replacement. He claimed that my laptop was beyond the 3 years of warranty. However, as soon as I showed him the first mail answers, I got from Microsoft support, he proceeded with the replacement.
Something important to mention is that there were not a refurbished or new laptop with identical specifications than mine (surface book 1). After asking the supervisor they replace my laptop with an upgraded model, the surface book 2.
After all, I advise to go to Microsoft Stores if possible. I was lucky I found a specialist who really cares about customer.