Okay,
I’ve discovered there is a misconfiguration somewhere on your website, which is blocking requests back to the server for the final outcome.
You can see this if you go to your web browser’s web development console (press F12). You’ll see that while your web address starts with “www”, the requests are being made to https://buddhacareers.com (without the “www”), which causes the request to fail. Browsers don’t allow this.
Note that it’s not only the wp_quizr plugin requests that are being blocked; for instance your jquery.adrotate.clicktracker.js (on the home page) and some theme banner images are also being blocked because of this.
I sugest you get a developer to help sort out your config so that all your URLS start with the same characters as this may cause some other functionality to break as well.
Let me know if you still have problems.
Regards