Great plugin, bug in backend

Plugin it’s great, and fits my needs.
But now (version 2.2) when you click on Popup Anythinh in the admin menu, it opens a page where you can opt in for notifications from them.
When you click the buttons (both “SKIP” and “ALLOW AND CONTINUE”) it opens a page with a blank WordPress

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<form method="POST" action="h t t p s://analytics.wponlinesupport.com">
[link is edited to post it]
Work around is to click “new” from the top bar and save the page where you can edit the popup(s).