Popup not displaying properly / registering my design changes

Hello, I’ve been trying to set up the Yeloni popup for the last few days but I’m finding the experience frustrating and buggy.

I am trying to use the Email Subscription 2 popup design, which is a text overlay over an image background. However my popup won’t display properly when I view it in Chrome on my Windows laptop – the grey overlay stretches way below the background image, much further than it should. Here’s a screenshot of what I see:

Any idea why this is happening? If I change the width or length of the background it doesn’t seem to make any difference – I haven’t seen any changes to the popup size as a result. I’ve also tried it with a plain background, not an image, and had the same results.

Another issue that is making things harder: every time I ‘redesign’ my popup it resets my configuration settings (eg. unlinks my Mailchimp account). And every time I ‘configure’ my popup it seems to ignore all my redesign changes, so I just revert back to the original template copy (although my background image remains for some reason??).

You can visit my blog at https://www.popcritical.com to see the popup in action (it’s set to display to each visitor only once, so go incognito or refresh your cookies if you want to see it again).

I would really appreciate any help you can give me on this, otherwise I’ll probably have to switch to using another plugin.

PS. Is there any way to change the inline message that shows after a visitor has submitted their email into the popup? I would really love to be able to change that, because currently the message says ‘you are now subscribed’ even though I use Mailchimp’s two-step subscription process – it’s a little misleading.