Hueman with some warning

Hi my friends
I want to use of Hueman theme but i see some alerts by Theme Checker plugin
What should I do ?
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Critical alerts:
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1) Malware : Network operations
curl_init was found in the file sharrre.php
Line 53: $ch = curl_init();
curl_exec was found in the file sharrre.php
Line 58: $content = curl_exec($ch);

2) Admin menu : Themes should use add_theme_page() for adding admin pages.
File ot-cleanup-api.php :
Line 82: $theme_check_bs = ‘add_menu_page’;
File ot-settings-api.php :
Line 99: $theme_check_bs = ‘add_menu_page’;
File ot-settings-api.php :
Line 100: $theme_check_bs2 = ‘add_submenu_page’;

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Warning:
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1) Text domain : Incorrect use of translation functions.
Wrong installation directory for the theme name. The directory name must match the slug of the theme. This theme’s correct slug and text-domain is hueman.

2) Text domain : Incorrect use of translation functions.
More than one text-domain is being used in this theme. This means the theme will not be compatible with WordPress.org language packs. The domains found are hueman, tgmpa, option-tree, theme-text-domain, option-tree-theme.

3) Plugin territory : Plugin territory functionalities
The theme uses the add_shortcode() function. Custom post-content shortcodes are plugin-territory functionality.

4) Custom elements : Presence of custom header
No reference to custom header was found in the theme.

5) Custom elements : Presence of custom background
No reference to custom background was found in the theme.

6) Editor style : Presence of editor style
No reference to add_editor_style() was found in the theme. It is recommended that the theme implements editor styling, so as to make the editor content match the resulting post output in the theme, for a better user experience.

7) Screenshot : Screenshot file
Screenshot size is 880x660px. Screenshot size should be 1200×900, to account for HiDPI displays. Any 4:3 image size is acceptable, but 1200×900 is preferred.
Bad screenshot file extension ! File screenshot.png is not an actual JPG file. Detected type was : “image/png”.