After submitting the Wordpress form, nothing happens, although the letter is delivered, how to fix it?

Question

WordPress

Good afternoon! I have the Ninja Forms plugin installed, after submitting the contact form, processing is in progress and that's it. The message is coming. But no message about successful delivery is displayed. I tried changing the theme, disabling other plugins, the mail function is enabled in the hosting settings. What could be the problem?

Answer 1

What version of wordpress plugin?
Does the page reload after submitting a form?
Are there any errors in the console?