Known Issue with Google Webmaster Tools in HCC
UPDATE: This issue is now resolved.
If you connect to Google® Webmaster Tools in the Hosting Control Center, you might experience issues when trying to log in to your Google Webmaster Tools account.
This is a known issue, and we are working with Google to correct it.
If you have another Google account, you can use it to verify your Google
Webmaster Tools site or access its data.