Share Add to favourite. Read on Mobile Enter Reading Mode Old Navy Glitch Get $20 Supercash emailed automatically ( Redeemable 7/20 – 7/28). Should be spend $25 instead of $10 Posted on June 29, 2019 by Shanmu Priya Old Navy Get $20 Supercash emailed automatically ( Redeemable 7/20 – 7/28). Should be spend $25 instead of $10 Steps: Go to ???????? Old Navy Add any Five (5) tanks for store pickup Go to cart Apply code TANK Checkout. Total: $10.00 + Tax