WebWerk Contact Chat Widget adds a floating contact widget to your WordPress website.
The plugin can be used to display a contact button for WhatsApp, phone, email or custom links. Site visitors can use the widget to contact you directly from your website.
It is lightweight, easy to configure and designed for performance and usability.
A separate Pro plugin with additional integrations and customization features may be available on the developer website.
The free version available on WordPress.org is fully functional and does not require a license key.
More information:
https://www.webwerk-muenster.de/webwerk-contact-chat-widget/