Auth problem for some customers who reinstalled the application on the 9-10th of May.
Incident Report for Adapty
Hello everyone!

We had a problem that affected a small number of production customers and prevented them from using Adapty SDK. It was active from 2:54 p.m. on the 9th until 10:09 a.m. UTC on the 10th of May.

The issue was specific to customers who met the following 3 criteria:
1. They reinstalled the app during this period, i.e., it was not fresh the first time they downloaded it from the store. They previously used the app with Adapty SDK, deleted it, and installed it again during the aforementioned window.
2. The app uses any authentification, i.e., passes customerUserId to Adapty SDK.
3. The app developer stores customerUserId between the installs, for example, in iCloud.

Less than 0.05% of the customers active in the applications during this incident were affected, but we take it seriously nonetheless. We're sorry this happened.

We will introduce this scenario as part of our internal tests to prevent this from happening again. We will also reach out to the apps disproportionally affected by this issue if there are.
Posted May 10, 2024 - 09:00 UTC