Hi,
try this
first of all, disable w3 total cache. then log into your host and edit .htaccess file and remove all W3TC data within.
# BEGIN W3 Total Cache
# END W3 Total Cache
don’t remove other data. remove only W3TC data.
then save and go to wp-content folder and remove w3tc folder, advanced-cache.php, object-cache.php, w3-total-cache-config-preview.php, w3-total-cache-config.php, db.php files.
after all complete, reactivate w3 total cache plugin and configure again
hope this helps you.