Hi there, lacanadapetgroom.
To clear the difference into zero, I suggest checking the beginning balance of the reconciliation. From there, you're able to see if all the transactions and if the information you entered is correct.
Before doing that, make sure your opening balance is correct. To do that, you can refer to this article: Fix beginning balance issues during your first reconciliation in QuickBooks Online.
Once done, check your bank statement. Please follow these stesps:
1. Click the Accounting menu at the left panel.
2. Go to the Reconcile section.
3. Check the account you selected in the Account drop-down list.
After that, if your account connected to online banking, match and categorize all of your downloaded transactions before you start reconciling. Leaving any unreviewed will affect your opening balance.
If your account isn't connected, you can now start reviewing any discrepancy reports. Please refer to this article to see the steps: Fix beginning balance issues if you've reconciled the account in the past QuickBooks Online. This article also contains details on how to finish the process
Please know that you're always welcome to post if you have any other concerns. Wishing you and your business continued success.