In a single case, on a customer laptop, when he activates windy he gets the below error:

"
Not authorized to Windy API: Cannot connect to Windy
Check out the Map Forecast API documentation
Or visit....
"

This is the first time I'm facing this since the day I started using windy...what might causing the issue? a firewall at his end?

In all other terminals that has been tested works as expected...

Any ideas how to resolve this?