affiliate referral not appearing when invoice paid.

Hello,

I am trying to setup the affiliation for my website which already uses invoicing/quote. so far the invoice payments are not updated in the affiliate dashboard. No referral is created.

1. I’ve installed the affiliation addon.
2. I’ve installed and setup wpaffiliate, and checked the addon integration checkbox (called wp-invoicing in my interface)
3. I’ve installed and setup the gravity form addon, and mapped it to my invoicing fields (just the email)

With an affiliate account aside, I’m testing as following, in a cookie-free window:
1- I go on my website affiliate link => a visit appear in the affiliate dashboard
2 – I click on my quote page and fill the gravity form => an invoice is created in wp invoice
3 – I send this invoice, and clic on the link as a customer, an then pay the invoice.

No payment appears on the affiliate dashboard 🙁
Could you guys help me debug this? How does it work? at what moment is the affiliate stored and used by you affiliate addon?

Also you noticed GeoDirectory was needed but gave no more info on this, do I have to setup anything?

Have a good day,

Morgan