Contact person: Urgent! Fix Push Notifications (Adalo + OneSignal + Make) — Must Deliver Within 3 Days

Phone:Show

Email:Show

Location: Chofu, Japan

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"Budget: $50 (success-based, one-time payment)
Deadline: Must be completed within 3 days after offer acceptance

Important Note
After the contract starts, I will grant you editor access to Adalo, and admin access to Make and OneSignal.
( In compliance with Freelancer.com rules, no email exchange is required.)

Current Situation
・The Make scenario is already built (Adalo → Make → OneSignal).
・Requests are successfully reaching OneSignal (HTTP 200, Success in Make history).
・However, no push notifications are delivered on iOS or Android devices.
・The issue is clear:
・External ID is empty in OneSignal Users.
・Push subscription is missing (no “Push / Subscribed” icon).
・In short, OneSignal receives the notification requests, but doesn’t know which user/device to deliver to.

What Needs to Be Done
Step 1 — Fix user registration
・Implement external_id binding: Adalo [login to view URL] must be registered in OneSignal.
・Ensure the device shows Push / Subscribed in OneSignal → Users.
Step 2 — Confirm delivery with instant send
・Run an immediate notification (no send_after).
・Verify:
・Make → OneSignal returns HTTP 200.
・OneSignal → Messages shows “Delivered”.
・Test device receives the notification.
Step 3 — Add 10-hour delay
・Configure send_after in ISO8601 format:
{{ formatDate(addHours(now; 10); "YYYY-MM-DD'T'HH:mm:ssXXX") }}


・First test with a 3-minute delay (0.05h) to validate scheduling, then switch to 10 hours.
Step 4 — Scenario hardening
・Add filters (only send when status = queued and onesignal_id is empty).
・Write back OneSignal response into Adalo (status = scheduled, onesignal_id = ...).
・Optional: use collapse_id to prevent duplicates.
Step 5 — App cleanup
・Remove Adalo’s native Trigger Notification action to avoid conflicts.
・Ensure message creation always saves to_user_id (receiver).

Deliverables
* A fully working system where sending a message in Adalo results in a 10-hour delayed push notification, reliably delivered on both iOS and Android.
* At least one successful test case (screenshot/log)." (client-provided description)