Tax Toggle has two display modes. The default Floating Toggle appears automatically. To place the switch in a header, sidebar, or page layout, change to iOS-style mode in Settings → Tax Toggle.
Add the block to a block theme
Open your theme's Site Editor and edit the template or template part where you want the switch. Add the Tax Toggle block, save, and check the result on the front end.
Add the shortcode
Place this shortcode in a Shortcode block, a shortcode-enabled widget area, or another WordPress field that processes shortcodes:
[wootax]
The shortcode takes no attributes. It displays the current toggle style selected in the plugin settings.
Add it in a PHP theme template
If you maintain a classic theme, you can render the shortcode in a template:
<?php echo do_shortcode( '[wootax]' ); ?>
Use a child theme or a source-controlled custom theme so an update does not overwrite your edit.
If you see two switches, check whether floating mode is still active and whether the block or shortcode was inserted more than once.