Empty entitlements after the product was purchased

Problem:
After making a purchase qonversion doesn't return any entitlements, result of checkEntitlements() method is also empty object {}

What I've done:

Double-checked if products and entitlements are associated correctly and they are
Updated subscription details in the Google Play console

Environment:
Flutter 3.24.0 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 80c2e84975 (6 months ago) • 2024-07-30 23:06:49 +0700
Engine • revision b8800d88be
Tools • Dart 3.5.0 • DevTools 2.37.2
Mode: debug
OS: Android
Device: Samsung Galaxy S24 Ultra