Floating Contact Button

Incorrect Stable Tag. It's recommended not to use "Stable Tag: trunk". Your Stable Tag is meant to be the stable version of your plugin and it needs to be exactly the same with the Version in your main plugin file's header. Any mismatch can prevent users from downloading the correct plugin files from WordPress.org.

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '$html'.

load_plugin_textdomain() has been discouraged since WordPress version 4.6. When your plugin is hosted on WordPress.org, you no longer need to manually include this function call for translations under your plugin slug. WordPress will automatically load the translations for you as needed.

Sanitization missing for register_setting().

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found 'str_replace'.

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found 'str_replace'.

All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '$html'.

Resource version not set in call to wp_enqueue_style(). This means new versions of the style may not always be loaded due to browser caching.

Processing form data without nonce verification.