Hey folks 
Jonida is on the right track. Stores showing as REDACTED in your app history have been purged from the platform as part of Shopify’s data retention process. Once a store is purged, all identifying information (name, domain, etc.) is scrubbed, which is why the detail page just says “The information regarding this store is not available.”
Closed stores are retained for a period before being automatically purged, but store owners can also request early data deletion through Shopify Support, which shortens that window significantly. That would explain your third screenshot where the store was only closed for a short time before being redacted.
The spike in REDACTED uninstalls you’re seeing all at once is consistent with purge processing catching up after a pause, rather than anything specific to your app. The uninstall events themselves get recorded when the purge runs, which is why they all cluster on the same date even though the stores closed at different times. It won’t affect your active installs or billing, just makes the history log noisy for a while. Hope this clears things up!