Templates can be overridden from your theme, the same way WooCommerce's own templates work. Copy the file you want to change into a fw-rental-for-woocommerce/ folder inside your active theme, then edit that copy. The original file in the plugin is left untouched and your changes survive plugin updates.
The available templates are:
No asset is loaded from a third-party server. Everything the plugin uses — scripts, styles, and all other assets — is served from your own site.
The plugin ships in twelve locales. English is the original. The other eleven are machine-assisted and have not been reviewed by a native speaker; corrections are welcome. Where a translation was uncertain, the plugin falls back to English rather than display a guess.
Dates, month names, and the first day of the week are taken directly from WordPress, so the booking calendar reflects the site's language and regional settings without any additional configuration.