I created embed sign up forms for my website. When customers fill their e-mail adres and subscribe, they are not immediately added to the list that I selected in the sign up form. I do see that their profile is being added to “Audience → Profiles”. 

After doing some research I found out that customers are only added to a list when they actually confirm their email subscription, but this is also not possible, because the customer does not receive a mail to verify.

I don’t understand how I can fix this, even after reading lots of different forms in the Klaviyo community.

Thanks in advance.

I have attached a picture of the opt in settings of the certain list that is connected to the sign up forms.