You can't use another Member's credits to score those Membership items unless you're both using the same email address.
Imagine this: If it's only your own Membership associated with your email, then it's all about your credits and your game. You'll see only your credits when you log in.
Now, check this out: If you've got a whole squad linked with your email (like your partner or the little ones), then it's a different ball game. You'll be able to see the credits for each Member and use them to pick their Membership pack items.
Don't worry if tech isn't your strong suit – our Customer Experience team are always ready to help. Just call us on 02 8306 9922 or send an email to membership@rabbitohs.com.au.