I had problems with my data getting all jumbled up and hit the "wipe tables" button after updating the addon and now I only receive the latest changes without the rest of the context. I am unable to update the dkp tables as it says I am up-to-date and my guild master is unable to send an unpdate manually as it does so automatically. I am not the only one with a similar problem.

Why can't I receive all the data from my guild master, why can't I manually request an update and why can't my guild master send it manually?

2.1 and higher is not compatible with 2.0. The sync system was abandoned due to several issues. Everyone must be either on 2.1 or 2.0

We are on 2.1 and not having a sync system is now causing problems..

If everyone is on 2.1, an officer can run the repair option that is available to reconcile DKP table issues that may have been caused by 2.0. Then it's just a matter of broadcasting that corrected data to everyone else. It's treated the same way as it was in 1.6 and prior.