У вашего броузера проблема в совместимости с HTML5
This tweak should let you bypass jailbreak detection from apps that don't allow you to use them because of the jailbreak. Perfect examples are Directv, Uber Partner, Pandora and others that force you to restore your iPhone to remove the jaikbreak and use those apps. No need with XCon version 41.
Go to cydia and add this repo to get the latest version of XCon. It's all in Russian, but all you need to get is XCon for the apps to work like if there was no jailbreak.
http://jailbreakvideo.ru