Purchase code

I have bought WordPress Automatic Plugin but I did not get the purchase code, now how do I activate the plugin.

Look here https://help.market.envato.com/hc/en-us/articles/202822600-Where-Is-My-Purchase-Code-

There is no drop down-menu next to the download button as you can see in the screenshot. Screenshot by Lightshot

You need to be in your downloads page

Assuming you are logged in then “www.codecanyon.net/downloads”