That particular date format settings is only for the form. It does not apply on the "display" . If you want to configure the format of the displayed date, you can edit the language file /language/en-GB/en-GB.com_easysocial.ini and locate the codes below,

COM_EASYSOCIAL_DATE_DM="jS M"

COM_EASYSOCIAL_DATE_DMY="jS M, Y"

COM_EASYSOCIAL_DATE_MY="M, Y"

COM_EASYSOCIAL_DATE_Y="Y"

COM_EASYSOCIAL_DATE_DMY12H="jS M, Y g:iA"

COM_EASYSOCIAL_DATE_DMY24H="jS M, Y H:i"

COM_EASYSOCIAL_DATE_12H="g:iA"

COM_EASYSOCIAL_DATE_24H="H:i"