In all of the threads on my forum, the posts are appearing in backwards order. New posts take the top spot and move all older posts down in the thread, which makes announcements and global announcements pretty hard to read. How can i make it so the new posts appear below the last post?

Admin Panel => General => Forum => Press the icon at the forums you want to fix.

Scroll down to the "Sort the posts of a topic by :" and set it to "Post's date (Most oldest in first)"

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In the case of topics in a forum, which is different to the messages in a topic, go to

Admin Panel => General => Forum => Press the  icon at the forums you want to fix.

Scroll down to the "Sort topics by :" and set it to "Topic's post's date (most recent in first)"

Alright that fixed it, thanks.

You're very welcome

If you have another issue do not hesitate to ask here on the support forums.