It seems to me like at the present there are new statistics available for Wikidata. The old statistics hosted at https://stats.wikimedia.org/wikispecial/EN/TablesWikipediaWIKIDATA.htm#editor_activity_levels are offline but the new one's aren't yet online.
When will I be able to look at statistics again?
At the moment, the new Wikistats interface is being developed and we should have a basic version with very few metrics up within a month or so. Over the next three months we will work on the API that will serve the rest of the statistics, and plugging these into the front end. In the meantime, Erik Zachte may choose to update the old statistics if he's able to. However, there may be slight delays in this timeline because two key members (myself included) are expecting babies this summer. Hope this helps.
