If you are subscribing to test a MailMunch form but can not subscribe because the form is stuck at the Subscribe button with a progress bar going on forever, this is not an issue with the subscription form. It is in fact the spam protection for the MailMunch form kicking in.
When multiple entries are made to the same form by the same visitor in a short period of time, the spam protection for the form kicks in and restricts the entries from being passed.
If you are testing your form we recommend doing it through an incognito window or private browsing window, and make sure to wait between the submissions.
subscribe button grey / gray
never ending animation
form submit issue
form not responding
subscribe button hangs