Just to confirm, do you see any error message when you try and upload one? Make sure your account is verified and see our recommended image size & resolution for custom thumbnails: https://goo.gl/T0AbeJ . Hope it helps!
Just to confirm, does this happen across different browsers? Keep us posted.
-
-
This Tweet is unavailable.
-
Looks like you're in a small and brief experiment (.3% of viewers for a few weeks) so you're seeing auto-generated thumbnails instead of custom thumbs. This is part of an effort to test/improve auto-generated thumbnails for the many creators that use them:https://goo.gl/A7oDmr
- 2 more replies
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.