I don't know what I did but now when I go into a topic instead of it being a normal forum. It only shows the topic starter's topic and then the rest of the replies in a list. How can I fix this? Thanks.

It sounds like you need to reset the display mode. When your viewing a thread, look for the options tab at the top of the first post in any thread. There you can reset the display mode to standard.

Ah cool All fixed thanks