We have been experiencing a lot of issues with the third-party services that we use to deliver upvotes. We are working on an in-house solution, but it's not ready for release yet. For now we just have to be patient with steemvoter and steemauto.
When we are ready to release our in-house solution, we will calculate any outstanding value that members should have received but haven't, and begin them with initial 'balances' that will add value to their first few upvotes.