Keep using the key and it will click properly or just randomly press it. Some blues/greens need to be worn in.
One of my MX Greens was like that on the Ducky shine fire 69 (the Q key). Barely clicked at all and didn't click at all if you pressed it "sideways" on the right side, when brand new. And being super compulsive OCD, I bought a second fire 69 because I couldn't handle a 'defective' keyboard.
Big, unnecessary waste of $169 that could have been saved by just being more patient and less scared of stuff.
One month later, that Q key clicks perfectly, the same as any other key. Damn thing just needed to be broken in and worn in I guess so the parts can align properly.
Just use it and don't go OCD Over this sort of stuff. It just isn't worth it. It's a keyboard, not a girlfriend. Press it often during downtime to wear it in faster.