Sorry to hear you are having this issue. Neither clearing your internet history or restarting your pc is going to help. As @PerplexedJam pointed out, you need to clear your browser cache. And if it still doesn’t work please make sure you are using the Chrome browser.
If those don’t work then your best bet is to submit a request to our support team who can further help you with this.
Thanks and sorry for any inconvenience.