After I update from personal to business, I can't edit the form anymore and the site is broken.
So I can't choose the form in the drop down - it just tries to load then show me to choose one of my forms (I only made one) again.
All the pages where the form has been integrated are empty - so all the sites are empty because I added the form to all pages.
I will now (in the middle of the night) try to tinker around with the plugin status, create a new one but anyway: This is bad. Please try to reproduce and fix that by installing the personal version, creating one form, including it to one page and then upgrading to business edition.
version before upgrade to business: 1.5
Update: I updated Wordpress to the latest version, installed the mailchimp addon, tried to update the plugin again and suddenly it works again: I can edit the form and the pages are not empty any longer.
Still: it's troubling to see the complete website gone just because of an update.