Hi
I uninstalled and installed the plugin twice to try to resolve the issue.
I installed iThemes Security to check if it was a problem with the wordpress core. IThemes worked normally. I uninstalled IThemes and reinstalled Defender and the problem persisted.
The ‘WP_MEMORY_LIMIT’ and the ‘PHP memory limit’ have the same value 256M.
Wordpress and all plugins installed and updated.
Apache Server with PHP: 7.24.27
Thanks