Hello @joe-up-it, thank you for supporting us!
You should be able to log in to the application with your account you are logged in here on the forum.
Do you get any error messages when you try to log in to the application?
I would also recommend typing the credential manually, not using autofill.
If you can't access Premium features, follow the steps in this manual: https://community.windy.com/topic/11832/what-to-do-if-you-can-t-access-your-windy-premium-features.
Note that the restoration process has to be followed on the device you originally placed an order.