Things that the plugin adds to the site. This section is not intended to be comprehensive.
The test tool only looks for a few specific types of added content.
Database Tables 1
wp_qwiz_textentry_suggestions
Options wp_options1
qwiz_textentry_suggestions_ver
PHP Error Log 3 lines
[02-Dec-2017 08:37:42 UTC] WordPress database error Incorrect index name '' for query ALTER TABLE wp_qwiz_textentry_suggestions ADD UNIQUE KEY `` (`word`) made by require_once('wp-admin/admin.php'), require_once('wp-load.php'), require_once('wp-config.php'), require_once('wp-settings.php'), do_action('plugins_loaded'), WP_Hook->do_action, WP_Hook->apply_filters, qwiz_check_textentry_suggestions_update, textentry_suggestions_db_install, dbDelta
[02-Dec-2017 08:37:42 UTC] WordPress database error Incorrect index name '' for query ALTER TABLE wp_qwiz_textentry_suggestions ADD KEY `` (`metaphone`) made by require_once('wp-admin/admin.php'), require_once('wp-load.php'), require_once('wp-config.php'), require_once('wp-settings.php'), do_action('plugins_loaded'), WP_Hook->do_action, WP_Hook->apply_filters, qwiz_check_textentry_suggestions_update, textentry_suggestions_db_install, dbDelta
[02-Dec-2017 08:37:44 UTC] PHP Notice: Undefined index: icon_qwiz in /wp-content/plugins/qwiz-online-quizzes-and-flashcards/qwiz_admin.php on line 601