How to change profile avatar?

I can't change my avatar picture! I can't even delete the picture I have now! Can someone help me, please?

That's very strange. You should be able to.

I just want to confirm that this is what you did to try to change it:
-Click on Profile (at the top of the page)
-Click on Avatar and upload the image on that screen.

If that's what you tried, then I'm not sure what the problem is. I was able to delete and re-upload mine without any problems.
You could also try it in a different browser to see if that helps.

If you're still having problems and need it changed immediately, I can change it for you with my admin panel.

Okay, I'll try again! (How did you delete yours???)

You delete it by checking the box that says "Delete Image" (on the avatar control panel page, right below your picture).
Then you click "Save"