Constant Content

This contains grammar errors throughout, including subject-verb disagreement and pronoun-antecedent agreement.

So i uploaded my first post and i got an email just now saying that my post has errors. I really don't know what to do as i have edited a lot. I thought it was perfect to send out. What can i do? i have check and the spelling are perfect, i don't know what it could be. Please help.
Thanks

Hey! I just joined this site late last night and spent hours learning about it. I have to say that I’m impressed with what I’ve heard about this site. I have just uploaded my first article and am very hopeful and excited that it may get approved. I was just wondering how long, on average, does this ...