Kirkland mozzarella cheese?

Is this kashrut


No good

I noticed in a previous posting that Kirkland Shredded Mozzarella is not kosher. I’m curious why not as I see what appears to be K sign at bottom of package?

Tablet K has an opinion about what constitutes kosher cheese that we do not agree with and don’t rely on.

Therefore, even though the Tablet K certified this cheese we say it is not kosher.