Hello.
I found that in footer.php (shop) thais is missing the tax2 property:

tax2: <?= $Settings->tax2 == 1 ? 'true' : 'false'; ?>

In languages is missing the payment method "bank" and some fixes for Spanish language

// English
$lang['bank'] = 'Bank';

// Spanish (fix)
$lang['no_data_to_display'] = 'No se encontró ningún registro, no hay nada que mostrar.';
$lang['update_address'] = 'Actualizar dirección';
$lang['description'] = 'Descripción';
$lang['bank_in'] = 'Depósito o transferencia';