First, try a different web browser to see if that makes a difference.
Are you sure your account hasn’t become silenced or suspended for some reason? You should have received an email if that was the case. Check your spam folders too.
Anettie, this doesn’t necessarily seem like a technical issue, but newer or not as active accounts on the forums have some restrictions where it will restrict the amount of posts on a specific topic. The more active and more posts you contribute on the forums community the more it will lift those restrictions.
If you have feedback, over the system our Support Site Feedback forums would be best to do so. If there’s any account level or in-game issues, the #support:customer-support forums is a better place to discuss this. The technical support forums are typically related to in-game technical problems like crashes and connection issues.