Help my opening/conversion balances aren't saving & updating

In the last week there have been two requests from clients who have tried to change their opening balances of accounts and it won't save and update for them. The reason for why the accounts balances aren't updating is because, the accounts payable and or accounts receivable balances don't match the opening Payable and Receivable invoices entered.  Xero requires all unpaid invoices whether they are to be received or paid to be entered prior to the conversion date, and the tota