@Web
You will have to update cart.php and enable it, but not sure if there are additional controlers.
I'm change condition but Error
if(!$contains_pack && $contains_product) {
osp_wallet_button(round($total, 2), sprintf(__('Pay %s cart items for %s', 'osclass_pay'), $count, osp_format_price($total, 2)), '901x1x'.$user_id, array('user' => @$user['pk_i_id'], 'itemid' => @$user['pk_i_id'], 'email' => @$user['s_email'], 'amount' => round($total, 2)));
}
Error
Fatal error: Uncaught PHPMailer\PHPMailer\Exception: Invalid address: (From): osclass@localhost in D:\WAMP\www\eee\oc-includes\vendor\phpmailer\phpmailer\src\PHPMailer.php on line 1513
( ! ) PHPMailer\PHPMailer\Exception: Invalid address: (From): osclass@localhost in D:\WAMP\www\eee\oc-includes\vendor\phpmailer\phpmailer\src\PHPMailer.php on line 1513