Info about the program: https://blog.avast.com/2013/04/26/recommend-avast-and-earn-premium-protection-for-free-2/
http://my.avast.com/recommendation
I can’t seem to find my recommendation information anywhere?
Was this discontinued?
No it hasn’t been discontinued, but your URL is incorrect, from the my.avast.com home page > Click on the Rewards > now click on the Recommend Avast & Earn Points - this should take you to this page https://my.avast.com/en-us/#rewards/recommendations.
Now you should see the unique URL for you, this you give to the person you are recommending avast to (Link to share) so they can download it.