Still the problem comes again. All licenses are removed.
License problem consists
Please don't remove the WPIDE plugin. The developers are checking the issue.
The issue isn't wpDiscuz related issue. One of the active plugins removed the values of the keys from the wp_options table. This may be done by the serverside as well.
The developers found and disabled eh following two options from the WP Rocket plugin to see if those are causing the issue or not. Please refer to the screenshot below: