For the second time in less than two weeks, Starbucks ' mobile ordering system went down Tuesday due to a "third-party system outage," the company confirmed to Axios. Why it matters: The coffee giant, which has been ramping up discounts in recent weeks to promote affordability, has a buy-one-get-one promotion Tuesday for its loyalty members. Driving the news: Starbucks' app had a message Tuesday that said mobile ordering was unavailable and to visit a store to place an order with a barista. The latest: Starbucks spokesperson Jaci Anderson told Axios that some customers "were briefly unable to access the mobile order and pay feature in the Starbucks app due to a third-party system outage." Flashback: Starbucks was affected by the July 19 CrowdStrike outage. Mobile ordering didn't work during the outage. More from Axios: Editor's note: This article was updated with comment from Starbucks.