Bank Balance Not Correct

I began using MYOB Business Pro in July 2021 and entered beginning balances for all relevant accounts.  I have always reconciled the bank with bank statements as and when required and it has always been correct. 

I've only recently noticed that the bank balance in my chart of accounts doesn't match the actual bank balance.  I've already double checked the opening balance on July 1, 2021, and it is correct. 

If I change the opening balance to negate and correct the amount, the MYOB balance doesn't match.  

Can someone please assist?

There are 2 bank accounts.

Savings Accounts matches, but Cheque Account does not match.

Thank you