mailchimp popup

Hi there,

I have sucessfully added the mailchimp subscribe form into my website and wanted to test the mailchimp popup form.
I have tried some options:
– included the form code into the footer.php of the main theme (I am using a child theme)
– added a code-block to the frontpage
– cleared cache
– tried different settings of how and when the popup should show up
but nothing worked and I didn’t find any hints in the forum.
Could it be that another plugin is interferring?
Thanks for your help.
Regards
Michael