I am trying to embed a Windy map on my Schoology page, but it is showing an error message, "www.windy.com refused to connect." and shows a frowny face. 
This was the embed code I tried:

Where did I go wrong?
I am trying to embed a Windy map on my Schoology page, but it is showing an error message, "www.windy.com refused to connect." and shows a frowny face. 
This was the embed code I tried:

Where did I go wrong?
@Ondřej-Šutera Is there some way in which Schoology might be blocking the iframe? Have you seen this "www.windy.com refused to connect" problem arise elsewhere?
@Ondřej-Šutera I tried the link from your widget and iframe generator website. They both showed the same error.
@Ondřej-Šutera
iframe width="650" height="450" src="https://embed.windy.com/embed2.html?lat=49.210&lon=-3.779&detailLat=51.510&detailLon=-0.130&width=650&height=450&zoom=5&level=surface&overlay=wind&product=ecmwf&menu=&message=&marker=&calendar=now&pressure=&type=map&location=coordinates&detail=true&metricWind=default&metricTemp=default&radarRange=-1" frameborder="0">
I am trying to embed a Windy map on my Schoology page, but it is showing an error message, "www.windy.com refused to connect." and shows a frowny face. 
This was the embed code I tried:

Where did I go wrong?