From April 5th 2019 accessing the SDL Customer Gateway will no longer be supported on Internet Explorer 9 and 10.
After this date you can continue to access the SDL Customer Gateway using IE9 and IE10, however we will not provide support for any issues you may encounter using these browsers.
Microsoft also no longer provides critical security updates for Internet Explorer 9 and 10 and we recommend you move to a supported, updated and more secure browser such as Chrome, Firefox, Safari, Edge, or Internet Explorer version 11.
For more information please read this Knowledge Article.