Update
We finally received a response.
They thanked us for taking a look and reporting our findings (we found no unusual data). They also said to continue monitoring our apps and report any abnormal data in the future quickly via "Sign in to App Store Connect account > Contact Us > Report a Concern > Report a Fraud Concern".
One last note I'll add is that they reiterated that manipulation of user reviews is against the PLA. I imagine this is what triggered the email for us, but I'm not sure why as we didn't find any abnormal rate of reviews. Anyhow, I recommend forwarding all App Store reviews to Slack/Telegram and keeping an eye on them.
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We still have not received a response to the email we sent. Is there any improvement in your situation?
Nothing on our side either.
We received the same email today.
Ideas/suspicions:
If you use RevenueCat, you know that they had a major two hour long outage on Friday February 10th. Any customers who made purchases during that period were unable to unlock content after paying. The issue was resolved, but any affected customers will need to manually Restore Purchases. Perhaps Apple's systems detected this as a form of "payment fraud".
A nefarious competitor is attempting sabotage your apps by buying fake reviews. Would be easy to detect if you notice an unusually high amount of new reviews for your apps. If so, disclose this to Apple immediately.
An unusual spike in downloads may have triggered this.
Other:
We investigated the email headers, and it looks like a legitimate email from Apple. But we can't be certain it's not phising, so do not share any sensitive information.
Besides the "Please address this issue promptly", there isn't much of a call to action. We reviewed our apps, analytics, reviews, etc and responded with our findings to show everything is in order. I'm not sure what going to happen next, but others have said Apple attempts to schedule a phone call to discuss the matter further.
In any case, I will update this thread as new information comes in. Please share updates here as well.
Thank you
I have it occuring in iOS 13.1.3, iOS 13.4.
Did you manage to find a solution to this? Or any workarounds?
Thank you, this helped a lot