Editing a post on ww.wp.xz.cn

Hello,

I’ve created a thread at a support plugin and linked to my site. My issue is resolved and I would like to edit my thread/post and remove the links to my site (The problem is no longer visible there) but keep the thread.

How can I do this? I created the thread yesterday and had an edit button then, but no longer.

If I can no longer do this, can the Plugin/Support-owner/moderator do so if I ask them to in that thread, perhaps? If they are able to edit others posts, that is.