has stopped working

Hello! I Installed mobile joomla - he is worked. But after unknown manipulation, stopped Recognition mobile devices, and I can not even imagine what happened! : ( I re-installs, but the problem remained with recognizers/. How i can find what in the problem? Thank you.
P/S
How to completely remove a component?

> How to completely remove a component?

By uninstall of MobileJoomla component in standard way.

> stopped Recognition mobile devices

Check that MobileJoomla and Mobile-AMDD plugins are enabled and visit yoursite.com/?device=auto to reset mobile mode saved in cookies.