Submit button after acceptance not working

Hello,

I tried to integrate the acceptance button inside a form.
After that the form can not be submitted. The Submit button is not clickable.

When I remove the acceptance tag it is possible.

My Form

<div class="form clearfix">
    [text* fullname placeholder "Name*"]
    [text* strasse placeholder "Strasse, Nr.*"]
    [text* plzort placeholder "PLZ, Ort*"]
    [tel* telefon placeholder "Telefon*"]
    [email* email placeholder "E-Mail*"] 
    [textarea* nachricht x8 placeholder "Ihre Nachricht an uns...*"] 
[acceptance dataprivacy]Ich habe die <a target="_blank" href="link">Datenschutzerkl?rung</a> gelesen und verstanden. [/acceptance]
[submit "Absenden"]
</div>
[form-ssl]

Maybe something wrong with the wordpress install? – In other stacks it is working like this.