Checkbox does not change its appearance when clicked

I'm working on a kivy application and I'd like to save checkbox state in json and display it when it runs. Unfortunately, when the starting value is True, and i click on a checkbox to turn it to False it does not change its appereance to unchecked despite displaying it correctly in a console with a print statement. When the starting value is False it works just fine.

python code:

class settings(Screen):
    
    with open('settings.json') as f:
        data = json.load(f)

    skipbool=data['skiplogin']
    
    def skiplogin_click(self, instance, value):
        if value is True: 
            print("yes") 
        else: 
            print("no") 
    pass

kv code:

<settings>:
    name: "screen_settings"
    GridLayout:
    
        cols: 2
        rows: 1
        Label:
            text: 'skip'
        
        CheckBox:
            active: root.skipbool
            on_active: root.skiplogin_click(self, self.active)