Because your threads are generally spam that nobody wants to see, or contributes nothing but useless or even toxic discussion. On Graalians and most forums, simply contributing doesn't mean anything. What you need to do is contribute something that encourages meaningful or relevant discussion.

Seeing as you're one of the very few people having this problem, I highly suggest reconsidering your posting habits and think about why we may have closed the threads that we closed.

After you have done so, feel free to message any of us if you still need any further clarification.