Here are some instruction manual , any questions   contact us directly   please

How to redeem zreward / vudu codes:

go to   find a prefix, redeem a code and wait for email with a VUDU code.

You can always ask and/or share your doubts on our google+ community page    there are smart vudu geeks who will help you in any zreward / vudu related issue.  

BTW. Try to buy at least 4 credits at a time (minimum 4 codes).

Here you can check zreward vudu prefixes MATRIX spreadsheet:

How to open USA iTunes account without credit card ?

Password Recovery Manual: