For you and your friend to each earn 10€, you will need to invite your friends from the ‘Bring friends’ section on the payzy app.
All you have to do is tap here on your mobile phone: https://link.payzy.gr/baf_land and start sending invitations!
Remember, the main requirement for you and your friend to each earn 10€ is for your friend to register via the link you forward to them and within the duration of the promo (see here).