TL;DR: Square Payments Data Not Syncing — most cases trace to a config mismatch, a hidden assumption, or a step skipped during setup. The fix path below covers the high-percentage causes first. If you're still stuck after 10 minutes, text PJ — most issues answered in one reply. 858-461-8054.
Operator Problem Guide
Square Payments Data Not Syncing
Square payment data that is not syncing in 2026 is almost always a webhook delivery problem. Square sends real-time event notifications to your webhook endpoint — if that endpoint is down, misconfigured, or returning non-2xx responses, you miss events and your records fall behind the actual transaction state.
Why This Happens
Configuration gaps between tools or services
Missing integrations or manual workarounds that weren't designed to scale
Changes in vendor behavior, pricing, or API that weren't communicated clearly
What To Check First
Verify your current setup matches the vendor's latest documentation
Look for recent changes — platform updates, new team members, configuration drift
Check if the problem is consistent or intermittent (different root causes, different fixes)
When To Escalate
The problem is costing you money or customers per week
You've spent more than 2 hours on it without progress
A vendor quoted you more than $500 and you're not sure if it's necessary
Dealing with this right now?
Check your webhook delivery logs in Square Developer Console → Webhooks → [your webhook] → Event deliveries. Filter for failed deliveries and note the event types that are failing. Square retries failed webhooks with exponential backoff for up to 24 hours. Re-deliver missed events using the "Resend" button in the console. For ongoing reliability, implement a nightly reconciliation job that calls the Square List Payments API for the last 48 hours and reconciles against your local records — this catches any webhooks that slipped through.
