Debugged, added Google Review button

Updated the referral code format from 6 digits to 8 digits

We have recently made several enhancements to our project. Firstly, we have implemented a fresh and updated frontend design, giving it a more modern and visually appealing appearance. Additionally, we have successfully resolved any issues related to the integration of third-party services, ensuring seamless functionality and improved reliability. Lastly, we have dedicated efforts towards optimizing the user experience, making it more intuitive, efficient, and enjoyable for our users.