Hello There,
Thanks for writing in!
If you want to validate your site, please do the following:
1] Please login to your account and assign the license. You need to assign the license to your site using this url: https://www.your-domain.com/. You have to make sure that url you just assign is the same as the one you have in your settings, Settings > General > Site Address
2] Go back to X Addons > Home again, and insert the license.
And please review the changes that we made on how you are going to validated your X theme because we made a big change in the process. Please check it out here: https://community.theme.co/kb/product-validation/