Hi August.

Math Captcha field is not added automatically to your forms. You have to add it as a field in CF7, just like any other form fields.

Just in case:

1. Make sure you checked “contact form 7” in Math Captcha settings.
2. Go to the form where you want to make use of Math Captcha
3. Find a dropdown with form fields, select Math Captcha and insert it into your form.