Display issues on my MacBook Pro M1

Hi,

I have discovered strange blue dots on my MacBook Pro display. I am using very soft cloth to clean my display. Exactly the same cloth I am using for my 2019 iMack 27 without any issues.

I have sent my laptop to the support in Poland and have it received back after few days. Support told me that they didn't find anything so the issues were caused by the software.

Unfortunately they didn't resolve any issues as blue dots are still here. I need to admit that these dots are visible only in strong light. I would understand if support told me that this is not a big problem and so on. But I don't believe that they couldn't tak a look at display in stronger light.

My MacBook was bought an year ago and was charged just 11 times. So it is not heavy used machine, mostly its doing nothing.

I am attaching photo that presents that issue. Photo that is made by iPhone 12 mini the day light, nothing more.

I am sure that it is the last time I bought expensive MacBook Pro, support is terrible.