Spindown is accessed by clicking/tapping the result in the dice control popup (which is accessed by clicking/tapping on a die)
Example dice from previous versions are not overwritten when you update, if you want the new examples you need to create/edit a die bag and toggle a box to include them.
if neither of these work, check that you actually have v1.4, the version number is listed at the top of the credits.
- sorry for the slow response!