Enatega Customer Application : Zone selection isn’t allowing changing once selected by the user.

Is your feature request related to a problem? Please describe.
Once a user selects a zone, they are unable to change their selection. This could lead to frustration if the user accidentally selects the wrong zone or needs to update it. Or for instance this application can be used over worldwide.

Describe the solution you'd like
The user should be able to update their zone selection at any time.
The new zone selection should be saved and reflected in the application immediately.