Yes, you can use it! But there are two approaches for the same. These are:

• Opt for a license that offers multiple sites: We have licenses that offer plugin integration for multiple domains. You can opt for the same and use it for your client’s websites.
• Purchase our single domain license for the client: Simply join our affiliate program, and refer our plugin to your client and earn a 30% commission on the sales. For more information on our affiliate program