Thanks for the quick response.

I was able to get a new thumbnail image uploaded.  I decrease the file size as you mentioned.

That can be due to an unsupported format. Please try with a different image. It's working. 

For the suggestion, we'll put up the format and size indication there. 

Team_Predyx

I was trying to replace the thumbnail with the image above in this post.

I can click "change" and select the file and click ok.  But it doesn't change.

Stacker_Sports

Predyx - Auburn (22) vs Oklahoma (11) - September 20th 2025

Wumbo

I was trying to replace the thumbnail with the image above in this post.

I can click "change" and select the file and click ok.  But it doesn't change.