If you are not using one of the supported browsers (CHROME & FIREFOX), we highly recommend you do so.
If you are using a supported browser please submit a ticket to support.
If you are NOT using a supported browser and the above doesn't help, you can still submit a ticket to support and we will try our best to make it work on that unsupported browser or add that browser to our supported list. Note that we may ask you for help in debugging if we do not have access to the same device/browser.