Other than not hiding transactions after statement date to see if you entered a wrong date on something what you need to do at this point is quite simple. It is called "manual data entry" Enter the missing transactions. There is a button at the top of the left hand banner for this.
I am old school and of the conviction that nobody should activate bank feeds if they have not mastered manual data entry first. Reconciling to the bank statement is all about ensuring every transaction is accounted for.