On 12th March one of our servers had a hardware failure resulting in loss of data for a select few players (who logged in within minutes of the failure, by chance). It seems that unfortunately, in this case, you were one of these players.
Our usual policy is to not offer reimbursements for bugs/etc, but due to the nature of this case, we have opted to reinstate items (after verifying a report is honest/valid).
We have added the aforementioned items (and diamonds to compensate for the potions) to your enderchest.