That's odd. Do you see any error message? Also, what device are you using to upload the custom thumbnail? Does it happen across devices? Let us know.
-
-
-
i happens over all platforms and i am useing my phone tablet macbook and a hp pavilion
End of conversation
New conversation -
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.