An earlier bug was causing some points activities to be submitted to the Ethereum blockchain more than once. So some people had too many points and some had too few. An audit was just completed and soon all balances will be corrected. You may see something in the activity feed that your balance was adjusted.
Soon your entire activity/history will be available to review through your profile page. If you believe you have found an error or inconsistency, please contact firstname.lastname@example.org. Thanks for bearing with this platform as it is being developed.