If you are experiencing issues, please read and follow the instructions below depending on the browser you're using:
on the top bar, select the button at the far right (three horizontal lines), click on
the question mark at the bottom and then select "About Firefox" (last option on the list). Firefox will
check if it's up to date. Then, please go to this webpage: http://www.mozilla.org/en-US/plugincheck/
you can update the relevant plugins for your browser, which are critical.
For Chrome: At the far right end of the browser, click on the icon with horizontal lines and click on About Chrome. If the browser is not up to date, please download the latest version.