[12345]

Somehow my attachments got "messed up" when I was creating a new Marketplace ad, and the wrong photo got set as the official thumbnail for the post. How do I go about changing it?

I did find this thread about changing the thumbnail, but after following the instructions, the thumbnail remains the same, even with a hard refresh and viewing in a Private Browsing window. Any suggestions?

[Adam]

Since there are attachments in the thread, the system will take the first attachment (based on the order they were uploaded, not the order you arrange them in the post) and use it as a thumbnail.

I've gone ahead and changed the thumbnail for you. If you'd like to change it again, simply delete the attachment(s) that shouldn't be the thumbnail, save the post, then edit again and re-attach the other photos.

I believe that posting a reply with an attachment would also force the thumbnail to change to whatever is attached there.