In this case you may need to go through Report Fault Wizard in CMS ie enable debugging, recreate the issue (you can open designer -> edit twitter widget change something in it and Save), see the relevant logs.
Perhaps it's a curl issue there.
If it starts to show correctly in CMS, but not on the player.
Then you'd need to create a new display profile with audit log level and edit your display assign this new display profile to it and enable auditing on the player.
This way it should send more logs to the CMS regarding this issue, which hopefully will tell us where is the problem.