Just noticed the banner on Cashrewards.
(1) Cashback is ineligible on purchases via The Card Network (TCN) App.
(2) Cashback is ineligible when using codes not listed on Cashrewards.
(3) You must return and click through from Cashrewards every time you make a new transaction/purchase.
are there any limitations to these cards? I buy a $100 instore card, get 10bucks back on cashrewards? no limit to how many I can order?