(Promo code) control panel website & android app integration

Hello i have android app with fully promo code system but i made changes on the control panel website so the old system of promo codes still not updated . so what i need is to update the promo code activity to be integrated with the new setup of the existing promo code which is already developed in the website NOTE : when i make promo code by the new system the promo shown in the firebase successfully but when i try it in the app i got error . so the website send the promo to firebase with no issues here is the existing promo code activity . java [login to view URL] the attached image show the current situation of the promo code page in the website please don't hesitate to ask me about anything before giving bid Thanks