In many cases error messages occur when your browser is not up to date.
In order that the platform works smoothly make sure that you are using the latest browser version. We are currently supporting Internet Explorer 11 or higher and the latest versions of Chrome, Firefox and Safari.
You can check if your browser is updated by clicking on following link:
In case your browser is up to date and you still receive an error message, please contact us via firstname.lastname@example.org