Squarespace change history: Acuity Scheduling / Webhook delivery delay

Squarespace reported a major Acuity Scheduling webhook delivery delay from 2026-02-11 14:08 UTC to 2026-02-11 15:57 UTC, lasting 1 h 49 min. Customers relying on webhooks faced delayed delivery; Squarespace said it identified the cause and resolved the issue but did not disclose the cause or fix.