If you are using Chrome, then there is no problem, however if you are using Internet Explorer then there is a potential issue where you will be unable to use eTrackr.
Although eTrackr is supported on Internet Explorer 11.x there is an issue if you are using Internet Explorer in Compatibility View. This is because Compatibility View degrades the browser version to an earlier version so you are not running the updated features of IE 11. eTrackr no longer works where Compatibility View is turned on as a default profile.
You can ‘remove’ eTrackr from Compatibility View and this will allow eTrackr to run correctly. However it does depend on how Compatibility View is setup.