This is the 13691st most frequent German word.
einlösbaren
"Einlösbaren" refers to something that can be redeemed or fulfilled (e.g., a redeemable voucher or a promise).
In this sentence, "einlösbar" is used as an adjective to describe the voucher, indicating it can be redeemed.
Der Gutschein ist nur bis Ende des Monats einlösbar.
The voucher is redeemable only until the end of the month.
"Einlösbaren" is used here as an attributive adjective describing the coupons, indicating they possess the quality of being redeemable.
Die einlösbaren Coupons befinden sich auf der Rückseite des Flyers.
The redeemable coupons are on the back of the flyer.
Here, "einlösbaren" modifies "Codes," specifying that the codes mentioned are those that can be redeemed.