Carefully read this portion of their T&C:
4.2 Referral Fee Payout Requests
Your affiliate365 account must have a minimum of 5 active referred Customers before you will be eligible for Referral Commission payment. Subject to clause 6, you are entitled to one payout per month, providing you have fulfilled the above Customer requirement up the end of the preceding month. The minimum payout request for earned Referral Commission per month is USD $50.00. There is no maximum.
An active referred Customer is defined as a visitor to your site(s) who has clicked through to a bet365 website via your click-thru link, has registered as a customer, deposited funds to their customer account and conducted wagering activity in one or more bet365 property – bet365 sportsbook, bet365casino, bet365poker and/or bet365games).
So basically, if you have 4 active customers regardless of how much commission you’ve earned you will never see it because of this clause.