Solved cookie and local storage bug

[Rahulditi]

Pull Request

Description

Solved bug for storing and retrieve the user's current level.(Cookie and Local Storage) And provided the cookie expiration time to 1-month since the cookie is created(note: I kept 1-month just for now and will be changing this if you request.

Related Issue

issue #20

Checklist

• [x] I have tested the changes locally and they work as expected
• [x] I have added necessary documentation or updated existing documentation
• [x] I have followed the project's coding style and guidelines
• [x] I have added appropriate test cases for the changes

[fuhadkalathingal]

Ok thankyou and please change the cookie expiring date to a 3 months or 6.

[Rahulditi]

Ok I will make it for 6 months....👍