The website (page all-course) store unwanted old data and I cannot remove it. This data is not stored in the browser cache. WP super cache cannot remove this cache. Refresh doesn’t help. In wp-config.php I have this: define ('WP_CACHE', false);
Please how can I remove this old unwanted data without using w3tc?
I am not sure what you mean by unwanted data. A screenshot would help a lot.
Try clearing your browser cookies, also try clearing transient cache(persistent cache added by WPLMS ), from WP Admin - WPLMS - Cache duration - set to 0