Empty page

If on page I wite only text, I can see text on page.
If I use code for Contact-form-7 [contact-form-7 id=”130″ title=”Contact form Altaro Standard”], I can see contact form.
I i use code from Manage-files plug-in [wpdm_file id=1], I can see Download and I can download file.

BUT!!! If I use code [email-download download_id=”1″ contact_form_id=”130″], I can not see page… It was empty…

Please help…

https://www.ads-software.com/extend/plugins/email-before-download/