Thanks for writing in!
I checked the website and can see you are using Pro 2.0.4. As you are using fairly old version of theme automatic update won't work. For that you will have to manually update the theme. Please take a look at our theme update guide and scroll down to manual update section to get the instructions to manually update Pro Theme.
To manually update theme you will have to login to FTP using FTP software like Filezilla and upload the Pro Theme files under
/wp-content/themes/ folder. To learn more, please take a look at following article:
Once you have updated Pro to latest version 2.5.5 then proceed with the validation part using our validation guide.