Hello @BlackHoundOptics ,
At this time, the small Constant Contact logo below a sign up form's disclaimer text cannot be removed. I've tracked your interest in this feature request, and submitted it to the engineers. If and when there's an update regarding that functionality, you'll be notified by them directly.
Regarding it not showing, are you using a Wordpress .com or .org site? The .com version won't allow outside scripting, so inline forms made directly through your Constant Contact account won't be compatible. In that regard, we'd recommend using the Wordpress integration, or link to a landing page signup form.
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