Premium notifications

I've been a premium user for years and have never used the alert notifications before. Today, I got curious and decided to set up a few alerts, but I noticed that I can't activate any of them. When I click the button, it doesn't turn blue.

Does anyone know what might be causing this?

Alvaro Bermúdez Cazorla
Do you have the latest version of the app? Try enabling notifications for a city you've added manually - does it not work there either?

I have that same problem...

Android, latest version. Ventusky-specific notifications are enabled. But none of the notifications in Ventusky can be activated - not for Current Location, and not for any stored City.