Connect your Google Sheet
One URL for everything — the Apps Script handles reading and writing. Without a connection the app shows no data.
Step 1 — Add Apps Script to your sheet
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Google Sheet → Extensions → Apps Script2
Delete existing code → paste google_apps_script.js → Save (Ctrl+S)3
Run testSetup() to verify it sees your sheetsStep 2 — Deploy as Web App
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Deploy → New deployment2
Type: Web app · Execute as: Me · Access: Anyone3
Authorise if asked → copy the /exec URLStep 3 — Paste & Test
⚠ Every time you edit the script, create a New Deployment — never edit existing.
Test URL: