Qonversion charts (New users, Trials, Subscriptions etc.) are generated based on the synced receipts we're getting from Qonversion SDK. If those receipts/transactions weren't transferred to Qonversion, they wouldn't be included in Qonversion dashboards or other metrics.
If you've implemented in-app purchases before integrating Qonversion SDK, you might see data differences until previous users update their application to a version with Qonversion SDK installed.