Install the themes at appereance and activated the license what you get after purchase.follow these steps: 

Open Apereance >>> Themes >>> Upload >> Activate

How To Activated Theme

1. Go to ( ATOMLabs ==> Theme Activation ). 

2. Input your registered email ==> save changes. 

3. Then the page will redirect into next theme activation process. 

4. Your Registered Email & Secret Key will fill automatically ==> click Generate activation code button 

5. You redirect to http://key.atomlabs.me/ ==> just type capcha on empty colomn ==> click send activation code. 

7. finish. Your theme is now activated