We're running an internal migration of all old players' stats to our new highly advanced statistics tracking backend. This means that stat changes will be a bit delayed while we ingest this huge backlog of data. Nothing is being lost, it'll just take a bit longer to show up in the in-game UIs.
If you don't have a report account, read over this
https://www.cubecraft.net/threads/how-to-use-the-new-report-system.175577/
:)