Changes to Mobile Layout every morning

Really strange ... template changes to Mobile Layout every morning when viewed from a desktop PC which disappears to the Default Layout when the cache is manually emptied - any ideas? as I don't want to disable the mobile layout functionality.

Thanks!

Please make sure that you have cache configured like here https://www.gavick.com/documentation/joomla-extensions/extensions-for-joomla-1-6/gk-cahce-plugin/ or for sure update cache plugins.