Two different machines
A referral/invite link attributes your signup or purchase to a partner — often required at account creation and not reusable as a cart code.
A coupon/promo code is a checkout string with region, plan and expiry rules. Mixing words creates false “RefDeal code broken” tickets.
Where shoppers get hurt
Urgency theatre is not a discount — verification is.
Read coupon-hygiene-europe-2026, promo-codes-expiry-explained and cashback-extensions-risks-europe-2026. Browse /deals/ for known end dates only.
- Stacking rival coupon extensions on a cashback portal click
- Expired screenshot codes from chats
- US-only codes on EU carts
- Typing an invite URL into a coupon box
Safer habit
One disclosed RefDeal invite at a time on offer pages. Portal-first cashback path. Sanity-check tool before trusting a code. Never pay DM “code unlock” fees.