Here are the steps to verifying your WiX website by adding a meta tag to your home page's header. Make sure to grab your verification meta tag provided in the email from Kliken:
EX: <meta name="google-site-verification" content="SOMESTRINGGOESHERE" />
Access your Settings from inside the Editor.
Click the Tracking and Analytics tab.
Then click SEO on the side menu (under Manage Website)
Paste the header codes in the text box under Add Header Code Meta Tags.
Save and Publish your Website
Once the steps above have been completed, we will automatically attempt to verify your website. Contact [email protected] if you need assistance or have questions about the verification process. You can also view the following documentation from WiX's help center
https://support.wix.com/en/article/verifying-your-site-using-header-codes