CS2 how to setup

I bought a key from Safemarket. When I activate it, it says 1 nle. How do I download Neverlose?

i think he got scammed

It sounds like you bought “NLE”, neverlose balance to be used on the Market (or subscription) instead of the actual subscription.

You can see that specific website (altho I am not familiar with it) lists a NL sub for a higher price.