Same here. Apparently all Chitika Premium ads are changed automatically to Chitika Select, meaning that everyone sees them, not just search engine traffic.
Chitika claims that you can opt-out of this by going to My Account when you’re logged in, then scroll all the way down and check the Disable Chitika | Select box. You can also add ch_select = “disabled”; to the code, HOWEVER, neither one is working for me. I’m getting very frustrated that I cannot disable Select!