I guess, my problem is the same.
It seems it's not the operator, because I tried to use two home providers and two mobile, everywhere the same result...
But if I try to open "some blocked data" in browser it shows me following:
What means that GOOGLE restricted my access to windy oO
It looks a bit strange... Are google and windy affiliated? :)
Also here is one of the error messages from map page:
"Failed to load https://node.windy.com/users/alertCheck/5980cbf104459a2f1cac3d97: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'https://www.windy.com' is therefore not allowed access. The response had HTTP status code 403."