Thank you for the previous answer.
This time I have problem with sending email via contact form 7. This problem occurs only when I integrate reCaptcha v3 in contact form 7. I have good config smtp on my wordpress because test emails work. When I delete integration all works good. I read in Contact Form help that it might have something to do with wp_footer () function. When I send an email I have a message: Failed to send your message. Please try later or contact the administrator by another method.