How do comments work?
I know it is a repetitive question, but I couldn't find the solution.
I can't leave a comment on any posts/questions on Stack Overflow, but I can leave a comment on Meta Stack Overflow.
They are different sites, with different privilege levels, and your rep on them is independent. On meta you need 1 rep to comment on any post and you have 1 rep so you're good. On stackoverflow you need 1 rep to comment on posts in your questions, but you need 50 rep to comment on posts of someone else's questions and you have 37, so you're almost there.