Squarespace change history: Unable to create new sites and purchase or modify non-website subscriptions

Squarespace reported a critical Site Editing outage affecting new website creation, domain registration, and purchasing or modifying non-website subscriptions. It started at 2026-04-28 10:17 UTC and was resolved at 2026-04-28 11:48 UTC, lasting 1 h 30 min. Squarespace implemented a fix but did not state a cause.