W3 Total Cache Fix

Multi Device Switcher works great with cache plugins like w3 total cache.

In the page cache settings of w3tc add “multi_device_switcher” without the quotes in the Rejected user agents.

this addresses the issue raised in https://ww.wp.xz.cn/support/topic/support-for-caching-plugins?replies=2

https://ww.wp.xz.cn/plugins/multi-device-switcher/