Activate my plugins via FTP

Try the below mysql query to activate your plugin:

UPDATE wp_options SET option_value="a:22:{i:0;s:19:"akismet/akismet.php";i:1;s:58:"contact-form-7-to-database-extension/contact-form-7-db.php";i:2;s:36:"contact-form-7/wp-contact-form-7.php";i:3;s:27:"js_composer/js_composer.php";i:4;s:23:"revslider/revslider.php";i:5;s:23:"soliloquy/soliloquy.php";i:6;s:27:"updraftplus/updraftplus.php";i:7;s:41:"wordpress-importer/wordpress-importer.php";i:8;s:24:"wordpress-seo/wp-seo.php";i:9;s:25:"wp-smushit/wp-smushit.php";i:10;s:33:"x-content-dock/x-content-dock.php";i:11;s:29:"x-custom-404/x-custom-404.php";i:12;s:39:"x-disqus-comments/x-disqus-comments.php";i:13;s:39:"x-email-mailchimp/x-email-mailchimp.php";i:14;s:43:"x-facebook-comments/x-facebook-comments.php";i:15;s:41:"x-google-analytics/x-google-analytics.php";i:16;s:43:"x-olark-integration/x-olark-integration.php";i:17;s:29:"x-shortcodes/x-shortcodes.php";i:18;s:35:"x-smooth-scroll/x-smooth-scroll.php";i:19;s:45:"x-under-construction/x-under-construction.php";i:20;s:29:"x-video-lock/x-video-lock.php";i:21;s:31:"x-white-label/x-white-label.php";}" WHERE option_name="active_plugins";

But as you say ‘determine a plugin conflit and ended up breaking my site’ I suggest you to follow below steps:

1 De-activate All Plugins via phpmyadmin
In the options table, find the option_name column and find find the line named active_plugins. On the active_plugins line, click edit. You will see something similar to this:

a:22:{i:0;s:19:"akismet/akismet.php";i:1;s:58:"contact-form-7-to-database-extension/contact-form-7-db.php";i:2;s:36:"contact-form-7/wp-contact-form-7.php";i:3;s:27:"js_composer/js_composer.php";i:4;s:23:"revslider/revslider.php";i:5;s:23:"soliloquy/soliloquy.php";i:6;s:27:"updraftplus/updraftplus.php";i:7;s:41:"wordpress-importer/wordpress-importer.php";i:8;s:24:"wordpress-seo/wp-seo.php";i:9;s:25:"wp-smushit/wp-smushit.php";i:10;s:33:"x-content-dock/x-content-dock.php";i:11;s:29:"x-custom-404/x-custom-404.php";i:12;s:39:"x-disqus-comments/x-disqus-comments.php";i:13;s:39:"x-email-mailchimp/x-email-mailchimp.php";i:14;s:43:"x-facebook-comments/x-facebook-comments.php";i:15;s:41:"x-google-analytics/x-google-analytics.php";i:16;s:43:"x-olark-integration/x-olark-integration.php";i:17;s:29:"x-shortcodes/x-shortcodes.php";i:18;s:35:"x-smooth-scroll/x-smooth-scroll.php";i:19;s:45:"x-under-construction/x-under-construction.php";i:20;s:29:"x-video-lock/x-video-lock.php";i:21;s:31:"x-white-label/x-white-label.php";}

Cut that code and click Go. Now all the plugins are successfully Inactivated.

2 Determine the cause plugin
Now the best way to determine which plugin is causing the issue is to enable each plugin one by one via your WordPress admin login page > Go to Plugins > Installed Plugins > Enable a plugin one by and check you website front every time.

Hope this work for you

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