Hi,

it's page, you can change it in the page settings, here:

https://prnt.sc/Whyq97y51rTW

Can you provide wp-admin access?

Hi, kindly check this article https://docs.codex-themes.com/article/612-my-changes-in-theme-options-are-not-being-applied-to-some-pages-posts-why

TheGem is built with this concept in mind:
1. Global settings are controlled via Theme Options
2. Post type settings can be individually controlled via Single Pages and Archive Pages in Theme Options
3. Posts settings can be individually (per post) controlled via Page Options

So, in your example http://www.ppglobalmarketing.hu/referenciak/patroncsere/ I can see, that this page has individual page options settings enabled for the title area: 
http://www.ppglobalmarketing.hu/wp-admin/post.php?post=846&action=edit
https://prnt.sc/ozDnbZX8c_0q

If you wish to apply the global settings to this post simply change this setting to ""Default Settings (Theme Options)": https://prnt.sc/jM3cKis2GU25 . In this case all settings will be inherited from Theme Options -> Portfolio Pages  https://prnt.sc/eqN3UGKP1szB or (in case here the settings are not enabled) from Theme Options -> Title Area (global level) https://prnt.sc/E1s7OmYdCzx_

You can control the paddings, the colors and backgrounds in the Style settings here https://prnt.sc/LIVhoX6rgXex (and, in case you need individual "per page" settings - in page options here https://prnt.sc/uUFmJhHkv9e9 ).