Hello Ivan!
Thank you for using our app!
Our app was built with modern browsers in mind, so we discontinued support for older versions: they just can't provide the same performance. Reliance on these older browsers will mean that we can't optimize our interfaces or offer enhanced features to customers in our app - it will mean slower progress, even less progress, and in some cases, no gain. We want to provide the best app experience for the vast majority of our customers, but support in older browsers would keep us from moving forward.
Check for browser compatibility at the link here.
If you have any other questions, just let me know, and I'll be happy to help. Have a great Tuesday!
Petya Ivanov,
Customer Service