Hi,
Thanks for contacting us and choosing our product!
About your questions we can answer as below:
1. If you want to use another language you can follow this topic:
How to translate WordPress theme or plugin?
If you still want to use English and change it to other string you can do it via child theme follow this topic:
How to customize WordPress theme using Child theme
The template for customize is: wp-content/plugins/haru-filmmaker/templates/filmmaker/video/single-content-style-1.php (or other style depend on your setting). You will see it on line 33 (change it or delete it)
You also can use CSS to hide it by go to Appearance -> Customize -> Additional CSS & add this code:
.single-video .video-heading {
display: none;
}
2. About single blog page the CSS code to hide thumbnail:
.single-content .post-thumbnail-wrap {
display: none;
}
.single-content .post-content-wrap {
margin-top: 0;
}
Here is the document of the theme: https://document.harutheme.com/frames/
Hope this helps!
****
Regards,
HaruTheme