I need to Lock my expert based on one PC or one CPU

[Hadi Jafari]

I need to Lock my expert based on one PC or one CPU 

[Sergey Golubev]

1. You can use MQL5 Market for MT4/MT5

2. And there are the article - 

• Securing MQL5 code: Password Protection, Key Generators, Time-limits, Remote Licenses and Advanced EA License Key Encryption Techniques - MT5 
• Protect Yourselves, Developers! - MT4 

3. If not so you can find the developer in Freelance service (but it will cost some money sorry).