xFi Advanced Security is blocking my website

One of my website domains is being blocked by xFi Advanced Security.

https://smartswfl.com. The website is accessed with no issues from mobile networks or when I have this featured disabled, but when i turn on xFi Advanced Security, I get a message (different depending on the browser) about not being able to load the page because a secure connection cannot be established. The SSL certificate is active, so no real reason to why it's being marked unsafe.

How can I fix this? any help will be appreciated.

I looked around the forum and found no concrete answer.