The $1 weekend deal 10 days ago had a lot of issues, and I just got an email apologising and including a $10 voucher. I presume it's not targeted.
$10 off Order @ Doordash (Wellington & Christchurch)
Referral: random (209)
Referee gets $15 off first 3 orders over $20. Referrer gets $30 credit once referee places an order over $20.
Check the web page heading before joining. Some referrals give the old (inferior) offer of 30% off 3 orders (up to $15).