affiliate link ranked 1 in google, now disappeared

Dear all,

I have an affiliate link that ranked 1 in google search. Not blog, article etc.. only the affiliate link that redirect to the original link.
I don't know how I was able to reach position 1. Now my site disappear.
What I can do now? Any idea how I ranked 1 and now nothing?

Thank you

Advertise it, or do traffic exchanges.

GOogle dance maybe?