Check the logs of melisearch and check the key which you used to connect the melisearch
in you file manager go to
https://russianshabbaton.com/wp-content/themes/shabbaton/style.css
in line number 233 you add the css code
Hi I hope you build the custom theme, to edit the home top you can find that in theme options. If you still unable to find the option you can hardcode the css not to display
.home-content-top {
text-align: center;
display: none;
}