Previously on Shared 3d dice...

I used to be able to see 3d dice roll in spectator mode but now I cant...am I doing something wrong?

Not necessarily. The dice system is flaky in many fascinating ways.

It's possible that your 3d dice settings have been changed on you (click the gear in the dice menu).

But it's more likely that the roller is just busted for you right now. Try:

1. restarting your browser
2. restarting your computer
3. deleting cookies and saved data for DDB, and log in again
4. hope it just works better next session