How do I see the request mediator button? I don't see it on the top as listed

Only the topic creator can hit that button and seeing as how you only have 1 post and it is here, you don’t have that ability to outside of that afaik.

thank you, I'll try making a post

If you have not already, check this out for information on requesting a mediator: https://forums.d2jsp.org/info.php?p=11

Yes, you must have a trade thread and be the creator of it to request a mediator. If you are purchasing something from someone else, she they are the owner of the thread, they must request the mediator.