If you are installing a template in a working store, make a backup before.
1.Unpack the package you received after purchase. In the theme folder there is an installation file.
2.Log in to your store's admin panel, then go to Preferences-> Themes and click on the "Add new Theme" icon.
In the "ZIP file" field, select the installation file of your template and click "Save".
Add the installation file to the theme folder using FTP, then select the archive in the "IMPORT FROM FTP" field and click save.
4. Click "Use this theme".
5. On the next page, click the "Save" button.
6. On the next page, click the "Finish" button.
Go to Advanced Parameters->Performance select "Recompile templates if the files have been updated" and save.
Next click "Clear cache".
If after the installation is missing in the theme product comments module:
Go to Modules and Services->Modules and Services and find the module "Product Comments" and install it.
If after installing the theme the product photo are different size than in the demo, go to Preferences->Images and click "Regenerate thumbnails".