Hi pavlakmc,
I see what you mean – I just tried to subscribe but, as you said, nothing happens when you hit the “Sign me up!” button. When I look at your page source, all the Post Notif elements I’d expect to see are there. However, I also see that there are a bunch of other JavaScript files included. I wonder if perhaps Post Notif is conflicting with another plugin or your theme.
If you are willing to do some experimentation (ideally in a development or test environment, not your live site), I’d suggest (temporarily) disabling all of your other plugins to see if Post Notif then starts to work. If it does, start activating each of your other plugins, one-at-a-time, until Post Notif stops working, in order to identify the culprit.
If you can determine which plugin is conflicting and you send me a link to it, I can take a look in my test environment, confirm I can recreate the conflict and then see if there is a way to make them happily co-exist.
Thanks,
Devon