My sale ad isn't getting a thumbnail

[AntonHelgesson]

First time posting an ad here, and i couldnt really figure out how to do it, but read that the first picture will be the thumbnail. But nothing is showing, what do i do now?

The name of the ad is
Warwick Streamer Chrome Riffle 2007

 

[beaglesandbass]

It only uses the first picture if the picture is in the original post from the very beginning. For example if you post it, and then edit the post to add pictures, it won't use the first picture as a thumbnail. I'm not sure if any user can edit the thumbnail after posting or just mods can, but either way I made the first pic the thread's thumbnail.

 

[Gorgula]

Same thing here. I changed a couple pics and now the listing thumbnail is gone. In edit mode, there is no option to specify the thumbnail.

Would you mind making the 1st pic the thumbnail?

Thanks