Shopify change history: Payment processing failures for merchants using PayPal Express

Shopify reported a major Checkout incident: PayPal Express payments failed starting at 2019-10-23 13:48 UTC; other PayPal checkout methods were expected to be unaffected. Payments were processing correctly by 13:57 UTC, and the incident was resolved at 2019-10-23 14:09 UTC, with a computed duration of 20 min.