That is the sign-up link code you would paste into your site to invite affiliates to join your program. If you're sending someone a sign-up link via email, you'd just use the bare link URL from that code:
https://www.e-junkie.com/affiliates/?cl=226920&ev=c6bf946ebe
I was able to join your program successfully using that link, and I do see affiliate hop links are available for both of your "How to Build a Business Around Your Blog" products; however, the Premium version has a product-specific 0% share, which would override your Common Share % on all affiliate-referred sales of that product.
When your affiliate logs into Affiliate Admin and clicks Get Affiliate Code, they would reach a Select Merchant menu, where they need to select your business name, "NinaAmir.com"; if they do not even find that name listed in their menu, this help page explains the likely problem and how to resolve it:
http://www.e-junkie.com/ej/trouble.for-affiliates.merchant-missing.htm