No problem for the support or documentation. It's what any extension should come with. Thanks for your subscription which lets us do everything we do
As for your issue, I just went to the page you originally linked too. The Send button popup isn't displaying right now and the overflow:hiddens are on that page. Did you remove them? Seemed like you got it above, so not sure why they'd be back.
For the new issue of the popup not appearing, I'm not sure about that one. Is the example page above a good place to test? I can't see that happen on that page, but will gladly test more once the overflow issues are fixed so we can see what's going on better. From a quick look at the page contents, I don't see any reason it wouldn't work though.
Thanks,
Alex