12 transactions from the bank register are not in the reconciliation report. How can I fix the problem. 3 days are missing.

I can help you with the missing transactions in your reconciliation, @Billus. Let me guide you through the process.

When locating the missing transactions, let's check your Audit log report since this contains all of the necessary data. From there, you can copy the data, then re-enter the transaction, and reconcile again.

Here's how:

1. Go to the Gear icon.
2. Select Audit log.
3. From the Events dropdown, select Reconciliations.

For detailed information, please refer to this article: How to view details for missing reconciliation reports or reconciled transactions in QuickBooks Onli....

Furthermore, I've added a helpful article to learn how to customize reports and focus on the details that matter the most to you: Customize reports in QuickBooks Online.

You can always reply in the comment section if you have any questions about missing transactions or any QuickBooks-related concerns. We're here to make sure everything is covered.