In your original message you said:

> However when I load to the website I get a message:
>
> Windows protected your PC
> Windows Defender SmartScreen prevented an unrecognized app from starting.
> Running this app might put your PC at risk.
> More info

This happens when your certificate has not enough reputation. You have to
use a Microsoft browser to build reputation for SmartScreen and a Google
browser to build reputation for Chrome systems. Firefox itself does not
have such a reputation based system. In your case, Defender SmartScreen
kicks in because reputation level is not high enough.

Once you have built a reputation for your certificate, the message will go
away.

BTW, this is not a new phenomenon. See this thread dated May 2013 (six
years ago):
http://www.lindersoft.com/forums/sho...ght=reputation

Friedrich