Does it support custom post?

You should check out this thread.

i wanted this same functionality and made some edits to the plugin files. i haven’t noticed any issues yet with these changes. Ultimately, i would like the additional capability to write data to the specific taxonomies associated with a custom post type. (Right now, only Category is available, and that will not be relevant for some custom post types that might be chosen.)

i would also love to see this implemented in future releases.

i have edited the plugin to allow association of form fields with custom taxonomy terms. i’ll post the edits soon. Super excited to have this functionality!