formstack.com not all content ssl-available

I just tried to fill this form: http://support.jimdo.com/contact/inappropriate-content/

It forwards to a form processing script at www.formstack.com. That automatically gets ssl-redirected by https everywhere.

However, then I get an error here: https://www.formstack.com/forms/index.php which says: "ERROR: SSL is not enabled for this form, but your browser submitted the data over SSL. Please try again. "

So it seems not all data on www.formstack.com is https-able, so it probably should be removed from https everywhere.

Trac:
Username: hanno

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