To report a suspected regional delay, compare like with like. Record when one test event was created and when its notification appeared on each device or account. Share only a broad region, timezone, platform, and network type; exact location is not needed.
Check whether the app was allowed to run in the background and whether the same event appears promptly in the web interface. Those observations can separate delayed push delivery from an underlying service delay. Do not call an issue region-wide from one device. A useful post states the tested action, times, observed lag, and which comparison still worked, while keeping recipients and message contents private.
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