Yellow Diamond

I need your help with something, last month, I started having problems with posting, as in, I couldn't post in any thread, I made this topic: http://mlpforums.com/topic/122691-donor-status-expiring-seems-to-not-want-me-to-post/#entry3540158 Somehow, after my donor status expired, I was unable to post, and it turns out that donating again allowed me to post. I don't know what else to do, and I don't want to have to keep donating to be able to post in threads.