Set the opening point
Record opening cash balance, restricted credit and the first transaction time. Keep any deposit reference beside the resulting account credit.

A session total is easier to verify when every transaction type is kept in chronological order. Screenshots of isolated wins cannot replace the account ledger.
Record opening cash balance, restricted credit and the first transaction time. Keep any deposit reference beside the resulting account credit.
Use provider round IDs and settled totals. Keep cascades, respins or free rounds under the original paid round when the provider history does.
Mark cashback, manual corrections, expired credit, fees and withdrawals separately so they are not counted as play results.
Opening balance plus credits minus debits should match the account total. Escalate one exact difference with its reference rather than a general session complaint.
Only when the provider ledger records a new debit.
Yes.
One exact ledger difference with its reference.