Can I make the Expert Advisor work on a specific computer?

 
How can I do that?
 
if you can sell you EA (or you can anyone to download it for free for example - so you can use the Market. Because as I see - you are validated so you can pass validation of your EA (not your validation; it is validation of your EA only), and estimate the activations per computer which every buyer (or free downloader) can use for that.

For details: read https://www.mql5.com/en/market/rules
Rules of Using the Market Service
Rules of Using the Market Service
  • www.mql5.com
General Provisions and Conditions of Use service Market