One of the main reasons for engaging the services of a Strata Manager (S/M) is so they’ll take care of the “financials”, and whilst it would be unusual in the extreme for that function not to be delegated to the S/M, perhaps check with them or take a look at the Agency Agreement that they hold with your Owners Corporation.
As for what to do, I guess it depends upon what’s wrong with the financial statements, where provided there’s no evidence of fraud and the closing balances are not too far away from what’s in the bank, perhaps “as good as they can get” is good enough provided the new S/M gets their head around things from now on and the Executive Committee keeps their collective fingers out of the detail!