Not Compatible With WP Block Checkout

I spent several hours trying to figure out why one site using this plugin worked fine, but another site did not work. It turned out to be caused by the latter site using the WP Block Editor, which now has WooCommerce fields. When switching to the [woocommerce_checkout] shortcode approach, suddenly it started working again.

I initially thought this was caused by the Flux Checkout plugin, but that plugin only renders the fields found on the chosen Checkout page. Following that thread led me to finally (after ~5 hours of debugging) to the Checkout page itself, where I finally saw the difference between the two sites.

It would be nice to see compatibility added for WP Block Editor, or to see a disclaimer in the Tax Exempt settings that indicates the incompatibility. Would have saved me a lot of time, which I have precious little of at the moment.