Subscription to Newsletter and WordPress

Hi, I use Mailpoet for Newsletter on this page https://protecmobil.com/ .

Usually when visit subscribe to our newsletter he receive one mail to verify his subscription and after that he is part of our subscribers.

Now, when adding the mailadresse and click subscribe visitor receives two mail.
One to verify his adresse and another one to change password for the wordpress login.

That means a visitor not only subscribe to our newsletter, he build a account to the website too at the same time, what is not desired. And it´s new. We use it since round about 1,5 years without problems.

Thanks for help
Andre

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