Cookies and cache are used to make your online experience easier by saving browsing information. However, if you are running into difficulty or unexpected behaviors, that could be a sign of outdated browsing data. Sometimes old or malformed stored data in your browser can actually interfere with the performance of our site and others. The best way to remove this bad data is to delete your cookies, cache and site data.
You can find specific instructions for your browser here:
You can also try using an incognito (in Chrome) or private browsing (in Firefox, Safari and Edge) session in order to make sure that no other stored data or settings impact performance.