Blank emails notifications

Hi, I have no idea how to fix my problem with email notifications. I translated the default text, for example in “Password Reset Email”, but when I saved it, I see just an empty body. And also I receive just empty emails when I ask to reset the password from the page with UM shortcode. Nativ WP reset works. I checked the message in the database, and there I see my translated text. Nontranslated emails work well. I have version 2.6.0