Version 3.7.3 of Bitcoin and Altcoin Wallets is a security patch that addresses an important bug.

Please upgrade to this latest version as soon as possible.

With this update, all transactions that are in an unconfirmed or pending state will be counted towards user balances. Any stale transactions that were never confirmed by the user or admin, will need to be cancelled. Otherwise, some user balances will appear decreased.

If you need to cancel pending/unconfirmed transactions older than 1 day, you can use a query like the following:

UPDATE
	wp_wallets_txs
SET
	status = 'cancelled'
WHERE
	status IN ( 'unconfirmed', 'pending' ) AND
	created_time < NOW() - INTERVAL 1 DAY;

Please contact me if you require any assistance with this.