Dorpond, don't feel disappointed, I believe JFrazierJr and others were just kidding - nobody wants you banned, we love your work! I think his comment was meant to suggest you entered one challenge and won, as if just entering guarantees you a win - it was a joke in poor taste.
The previous posters do not have any negative feelings regarding your previous map - this much I am sure. I personally am very glad you entered and have missed your work since the VTT map challenge a few months back -that you won.
You are quite right, that we CG'ers only seek to help other mappers out - any posts about banning, as I said, a joke in poor taste.
Get excited about your work, we are!
PS: I believe the river problems involve the fact some of your rivers split downstream into two rivers. Rivers don't do that. When two rivers converge and flow downstream, this is a fork, as it occurs in nature. Rivers do not split downstream into multiple rivers - this problem is common with many new regional mappers.