Надо исправить ошибки. Хостинг Timeweb на Wordpress

Deprecated: Methods with the same name as their class will not be constructors in a future version of PHP; nacin_footnotes has a deprecated constructor in /home/m/my.com/public_html/wp-content/plugins/simple-footnotes/simple-footnotes.php on line 10

Notice: Use of undefined constant ddsg_language - assumed 'ddsg_language' in /home/m/my.com/public_html/wp-content/plugins/sitemap-generator/sitemap-generator.php on line 45

Notice: Use of undefined constant wp_cumulus_widget - assumed 'wp_cumulus_widget' in /home/m/my.com/public_html/wp-content/plugins/wp-cumulus/wp-cumulus.php on line 385

Deprecated: Функция register_sidebar_widget с версии 2.8.0 считается устаревшей! Используйте wp_register_sidebar_widget(). in /home/m/my.com/public_html/wp-includes/functions.php on line 5383

Deprecated: Функция register_widget_control с версии 2.8.0 считается устаревшей! Используйте wp_register_widget_control(). in /home/m/my.com/public_html/wp-includes/functions.php on line 5383

Warning: Cannot modify header information - headers already sent by (output started at /home/m/my.com/public_html/wp-content/plugins/simple-footnotes/simple-footnotes.php:10) in /home/m/my.com/public_html/wp-content/plugins/contact-form-plugin/contact_form.php on line 90

Deprecated: Функция get_plugin_data вызвана с аргументом, который считается устаревшим с версии 3.0.0! The Site Wide Only: true plugin header is deprecated. Use Network: true instead. in /home/m/my.com/public_html/wp-includes/functions.php on line 5667

my.com неполный адрес сайта.