I'll start in Amplitude to find which funnel step lost conversion, then correlate the timing with deploys, Datadog error rates, and Sentry to pin the cause.
Breaking down the funnel2 steps
Segment the drop by platformThe break is the "First project" step on mobile web. Checking what shipped and what the logs say.
Confirming the cause3 steps
Open Datadog dashboard for /onboarding/new-project
Open the suspect deploy PRCause confirmed. Building a metrics view and an action plan with owners.
Found it. Activation dropped 41% → 32% and the loss is entirely at the Verify email → First project step on mobile web (−17%). The change is a clean step-down at 2026-05-31 13:52 UTC, which is exactly when PR #2904 ("Lazy-load project template picker") deployed. On mobile Safari, clients on cached HTML 404 on the new lazy chunk and throw TypeError: cannot read 'templates' of undefined - 9,841 Sentry events, Datadog client error rate up from 0.4% to 11.2%. I've opened the metrics view and an action plan with owners in Libra Computer.
Create incident issues in Linear
One P1 to revert + fix the lazy-load, plus two follow-ups for monitoring guardrails.