1. visit https://freakydeakytexas.com/wp-admin/admin.php?page=gf_export
2. select the contact form.
3. select all fields.
4. click Download Export File.
5. CSV will download, but it is completely empty.

Gravity Forms compatibility is enabled with WP-Stateless. Not sure if that is related to not.