In the event of server issues it may be necessary to clear the cookies and cached data in google chrome.
To do this click the three dots located at the end address bar:
Then go down to 'More Tools' and click 'Clear Browsing Data'.
In this area make sure the time range is set to at least the last 24 hours. You may wish to untick 'Browsing history' if you do not wish to clear this. Make sure 'Cookies and other site data' and 'Cached images and files' are ticked and click clear data.