У вашего броузера проблема в совместимости с HTML5
Get Ready!
In this video I will discuss about how to fix idm extension problem. When you try to add idm extension in chrome browser then idm extension displays apps, extensions and user scripts cannot be added from this website.
–enable-easy-off-store-extension-install
Like Facebook Page: https://goo.gl/pS9y1W
Follow us on Twitter: https://twitter.com/TeluguTechTrick
Follow us on Google Plus: https://goo.gl/VDhjLd