feature inquiry: Expiration date for posts

You can use the caldera_forms_pre_render_form filter for this. If that filter returns a string, then that string, instead of the form is shown. So you could check the date or anything else, and then return an expired message to show that message instead of the form.

https://calderaforms.com/doc/caldera_forms_pre_render_form/

If you need help implementing this, please open a support request at https://CalderaForms.com/support