incompatibility with CF7

hi,

thanks for the plugin.

Cf7 sends “wpcf7_add_shortcode is deprecated since Contact Form 7 version 4.6! Use wpcf7_add_form_tag instead.” because the line line 72, 73, 300 in your plugin. Can you check?

https://contactform7.com/2016/12/03/contact-form-7-46/