On 2016-10-12 11:50 UTC, we began to see increased latency with the async analytics (POST /1/stats/jobs/accounts/:account_id) endpoint. This has created a backlog and, as a result, we have reduced the concurrent job count from 100 to 50. We expect the backlog to clear in 2 to 3 days. While jobs will take longer to complete, please note that success rates are not affected.
Twitter Ads API Team