Search for account statements topic, some good points in there.
If you are using unaltered reports the till cash and card wont be down against report values but your cash and card will be less than sales with the difference being the account payment types.
Account payment is the marked payment along side cash and card.
Sales are processed in that work period and the payment type is account.
In theory all you should need is a way to show your account balance payments (cash or card paid into account)
To have a proper report you would also was a ‘ledger’ to show the carried forward balance.
BF account balances
new sales
new pos payments
new account payments
=CF balance (new total of accounts carried as debtor balance)