Correcting an incorrect reconciled item - that should have been matched originally

Hi, I am new to Quickbooks Online. I reconciled a deposit and expense that I should have matched so these entries were duplicated on the bank register. In reconciling the bank statement, I ticked the deposit and expense that I had manually processed instead of the transactions already processed (via sales/accounts receivable and bill payment/accounts payable). I finished the reconciliation and noticed on the bank reconciliation report that while statement ending balance was correct, the register balance was out by these amounts which also reflected as uncleared items. I then deleted the deposit and made the expense void. When I go to reconcile, the pop up message says, the "Ýour account is not ready to reconcile yet" and the opening balance is out by the difference. Please can you you advise how I can correct this? Thank You so much.