I went to your licenses page and see you added your website URL both for the production and staging version which is not correct. I removed the staging version at the moment.
Also by checking the front end of your website I see that you are using the version of 2.1.3 of the Pro theme which is old. Please backup your website completely and update the theme to version 2.1.6.
Another point is that it seems you are using the Jetpack. Please clear the cache and disable that plugin before the validation as the cache might be the problem cause.
After that, please try to validate your website using the guide below:
If you still have problems and there is a connection issue, it might be something related to your server which you need to follow and share the workaround below with your hosting service provider to fix the issue:
kindly get back to us with the result of the steps above and URL/User/Pass of your WordPress dashboard using the Secure Note functionality of the post to follow up the case if you still have problems.