If there are some reconciliation differences, it's possible that there are missing transactions, incorrect opening or ending balance.
To make sure the beginning balance of the reconciliation is correct, see the below steps:
On the Reconcile page, click the Edit info button.
In the Edit the information from your statement screens, verify that the Ending balance and Ending date information matches the information from your statement (refer to the screenshot below).
Make any necessary changes to the Ending balance and Ending date.
Click Save.
For more details to resolve issues when reconciling, see the below articles: