Thumbnail not resizing?


I am using rtmedia with BuddyBoss and you can see one of my groups here:

In the settings I have changed the size of the thumbnail to be 500px wide with no cropping and no max height. But it is still the default size (and cropped). Please can someone let me know what might be going wrong?

Thanks, Jack p.s. the Topic creation tool is! Is it too available as a plugin?

I don’t suppose anyone can help with this? :relaxed: