As of October 17, 2025, we have changed the terms of use for the discussion forum feature in the original editor. This is now a premium feature available with any premium service plan.
The reason for this change is to protect forums from misuse by unwanted users and spammers.
If your project is on a free plan, you will not be able to add posts to discussion forums, as the input field for posting will not appear.

The solution is to purchase a premium service plan or use an external discussion forum service, which you can embed on your site as a widget.
Alternatively, we recommend switching to our new website editor, where you will also need to add a discussion forum via an external service, such as Disqus.