On a monthly auto renewable subscription offer I have generated 500 offer codes giving 1 month free for all users redeeming it (new, active and expired subscribers).
However, when I redeem any of the codes generated typing it in the App Store redeem code page or clicking on the offer code url (For example: https://apps.apple.com/redeem?ctx=offercodes&id=1483756186&code=RETFMAA8ET4JRKNZ00). it says the offer has expired everytime.
I have generated these codes today and the expiration date is set to 01/31/2021.
I have read again and again the documentation but can't find any mistake I could have made.
Any help would be greatly appreciated.
Thanks!