We can investigate this together what's causing the deposits not showing in the reconcile and register page, Brum.

Let's make sure you choose the correct bank account when recording a deposit in QuickBooks. Then, ensure you choose the correct Statement Date period in Begin Reconciliation window  . If the deposits are already reconciled, then it will not show in your Reconciliation window.

To trace the missing deposits, you can use the Find tool in QuickBooks.

Here's how:

1. Click Edit on the top menu.
2. Choose Find.
3. Click Advanced.
4. Choose Transaction Type under Filter.
5. Choose Deposit under Transaction Type.

If the missing transactions are showing in the Find window, you can run the Verify and Rebuild Data utility. It's possible there's a damaged data in the company file preventing the deposits to reflect in the reconcile and register page.

You can create a backup first to avoid any accidental data loss before performing the troubleshooting steps in this article: Resolve data damage on your company file.

If the same thing happens, I'd suggest contacting our Customer Support Team. They'll investigate what's causing this issue.

Here's how:

1. Click Help on the top menu.
2. Choose QuickBooks Desktop Help.
3. Click Contact us.
4. Click Search for something else and enter missing deposits in the Tell us more about your question: field.
5. Click Start a Message to connect with us.

Please reply to this thread if you need anything else with deposits. I'm here to help.