I'd be happy to help you undo your reconciliation.
Just to clarify, are you using QuickBooks Online Accountant (QBOA)? If so, then you could use the exclusive feature in QBOA to undo the reconciliation. Here's how you can use it:
Select the client from the drop-down list on the Toolbelt to open the client's company file.
Click the Gear icon, then choose Reconcile.
On the Reconcile an account page, select History by account.
On the History by account page, pick the Account and Report period to locate the reconciliation to undo.
From the Action column drop-down menu, select Undo.
Click Yes.
In the confirmation window, select Undo, then OK.
For additional insight about this process, I recommend following this article: Undo a reconciliation
Once done, start the reconciliation process again by following the instructions and screenshots provided in this QuickBooks tutorial: Reconcile your accounts.
That should answer your concern for today.
Let me know how everything turns out, or if you have any issues after following those steps. I’m more than happy to help. Take care!