Quick fix for the mobile style issue:
Go to: Plugin & Products --> Plugin Manager
Search the plugin: "VSa - Sub-Forum Manager - FB"
Search:
PHP Code:
if ($vbulletin->options['vsasfm_enable'] AND ($vbulletin->options['vsasfm_coltarget']>0))
Replace with:
PHP Code:
if ($vbulletin->options['vsasfm_enable'] AND ($vbulletin->options['vsasfm_coltarget']>0) AND ($vbulletin->userinfo['styleid'] != XX))
Note: XX have to be your mobile style id!
Think Valter will update this addon soon.