Secure Connection Failed for XFinity subscribers

Some XFinity users who attempt to access the domain wowgirls.com may receive secure connection related errors such as:

Secure Connection Failed
ERR_SSL_PROTOCOL_ERROR
SSL_ERROR_RX_RECORD_TOO_LONG

Or any other error related to secure connection to the site.

Apparently, albeit by mistake, XFinity has categorized the domain wowgirls.com as Phishing threat.
Obviously the domain is fully under our control and is only used for our websites, so the categorization is unfounded.
We are attempting to sort this issue out with XFinity, however contacting the Customer Service without having XFinity account so far is not effective.

We would kindly like to ask you to contact the XFinity Customer Service notifying them about the issue you are experiencing with the domain wowgirls.com and it's subdomains.

Until the problem is properly resolved on the side of XFiniity as a temporary workaround you may disable the Advanced Security as described here.

We are sorry for the inconvenience and hope the issue is going to be resolved soon permanently.