Hello,

If I want to install a demo content, I have the message that I need to activate the theme. If I try that, I get the message that it has expired. 

### Theme Information ###

Theme Name: Kalium
Current Version: 2.5
Theme Directory: ~/wp-content/themes/kalium/
Child Theme: No
License Activated: ❌

### WordPress Environment ###

Home URL: http://51.255.46.29
Site URL: http://51.255.46.29
WordPress Version: 4.9.5
WordPress Multisite: -
WordPress Memory Limit: 40 MB - We recommend setting memory to at least 128MB. See: " Increasing memory allocated to PHP "
WordPress Debug Mode: -
Language: de_DE

### Server Environment ###

Server Info: Apache/2.2.15 (CentOS)
PHP Version: 5.3.3 - We recommend a minimum PHP version of 5.6. See: "How to update your PHP version"
PHP Post Max Size: 64 MB
PHP Time Limit: 300
PHP Max Input Vars: 1000 - Recommended Value: 1500.Max input vars limitation will truncate POST data such as menus. See: "Increasing max input vars limit."
Max Upload Size: 64 MB
MySQL Version: 5.1.73
cURL version: 7.19.7, NSS/3.19.1 Basic ECC
DOM Document: DOMDocument is not installed on your server, but is required if you want to Import Demo Content data.
WP Remote Get: ❌
WP Remote Post: ❌
GD Library: bundled (2.0.34 compatible)

### Security ###

Secure connection (HTTPS): Your site is not using secure connection (HTTPS). "Learn more »"
Hide errors from visitors: ✔

### Active Plugins (6) ###

"LayerSlider WP" by "Kreatura Media" – 6.7.6
"Advanced Custom Fields: Flexible Content Field" by "Elliot Condon" – 2.0.1
"Advanced Custom Fields: Gallery Field" by "Elliot Condon" – 2.0.1
"Advanced Custom Fields: Repeater Field" by "Elliot Condon" – 2.0.1
"Akismet Anti-Spam" by "Automattic" – 4.0.3
"All In One SEO Pack" by "Michael Torbert" – 2.6.1