Can't Subscribe – "loading…"

I noticed that I have to click 2 times the submit button for completing the subscription:
1 click and it says “loading” then if I click the second time it works, how can i fix it? O_o

Hi,

Another plugin is probably interfering with the form. Can you try using the iFrame version instead of the shortcode?

Thanks!

Thank you, with the i-frame is working ??
Can i change the css of this?

Found ?? https://vimeo.com/87226548