Before uninstalling the app you should make sure to deselect any themes from the "Supported Themes" section of your Widgets (this will remove any geolizr related code from your themes).

Here an example image for the currency widget:



Clean up the rest of your theme with these steps:

Please go in the Admin Theme section and "Edit HTML/CSS" 

image




Remove this line in the theme.liquid:


If you have not yet removed all widgets from the theme, you can also manually search for geolizr in theme.liquid:


After that, you can remove all geolizr files in the left section:


 

If you need help with that e-mail us: support@geolizr.com


Afterwards, you can safely uninstall the app by pressing the trash button in your App List.

More details you can find here: https://docs.shopify.com/support/configuration/apps/how-do-i-uninstall-an-app.

The subscription will be cancelled automatically as soon as you have uninstalled the app.