GraphQL query for time tracking returns no data

GraphQL timelogs no longer returning.

I used to use a simple query like this one to get timelogs for my organization but no data is returned as of about a week ago.

query {
  group(fullPath:"embrk-dev") {
    fullPath
    timelogs(startDate: "2020-09-01", endDate: "2020-09-30") {
      nodes {
        timeSpent
      }
    }
  } 
}

The only thing I can think happened is our billing plan lowered about that time. Is this feature behind one of the paid tiers? I couldn't find any documentation indicating it was.