The short answer
Astra fixes checkout abandonment by diagnosing the exact failure point, not by guessing at "best practices." She pulls every session that started checkout in the last 30 days from PostHog and Stripe, builds a step-level funnel (landed on /checkout → entered email → entered card → clicked submit → succeeded), and identifies which step has the biggest drop. Then she replays 20 abandoned sessions to spot the actual cause — slow card validation, confusing copy, broken Apple Pay, hidden tax surprise, missing trust badges. She drafts a specific fix (code change, copy tweak, new payment method, or trust signal), opens a PR, and after deploy runs a 7-day A/B comparison to prove lift. Most teams recover 8-22% of abandoned checkouts within 2 weeks. The deliverable is a Lark report with the diagnosis, the PR, and the post-fix conversion delta.