If you use WordPress you will probably see two different profile thumbnails – one on the top right of your screen and one on the top left. For me, the one on the top left shows when I post links on Facebook.
I battled a while today to find where to change them both.
The one on the top left is changed by:
- Settings (the last option)
- and then on the top right of your screen you should find an option to change it
The one on the top right is changed by
- Click on the icon
- settings (this screen should have blue border at the top)
- Public profile
It may not change immediately for several reasons – you may need to empty your cache, Facebook may not update its caches immediately and WordPress can sometimes take a while to refresh.
Hope this helps someone else out there!