Hello there, @Grassfed.
Thanks for visiting the Community. It looks like you have more transactions in your bank statement than in QuickBooks which is why it's showing the amount as more than what you can tick in the reconciliation page.
Your bank statement is the source of truth, I'd suggest you check and compare your QuickBooks transactions with your statements. Then, add those transactions you found in your statement.
For a more in-depth guide, refer to this help article: Reconcile an account in QuickBooks Online.
Should you encounter difficulties in reconciliation, read through this article: Fix issues while you’re reconciling.
Feel free to message again if you have any more questions about reconciliation. We're always delighted to assist you further.