If the voucher is not working, make sure to check the following:
– If you reached the minimum order amount
– If you fulfilled all promo requirements
– If the promo duration has passed
– If the voucher is fully consumed
No, each voucher you’ve received is only valid for one-time use (eg. P50 Omnibus QR is only valid for one-time use). But feel free to continue paying via QR or paying via Online to shop as much as you want!