Hi!

I'm newbie but installed Kalium right like I should. I cannot register my Kalium Theme. 

404 Not a valid product

What should I do now?

Here's my System report

### Theme Information ###

Theme Name: Kalium
Theme Version: 3.0.7
Previous Versions: -
Theme Directory: ~/wp-content/themes/kalium/
Child Theme: -
Theme Registered: ❌

### WordPress Environment ###

Home URL: http://sebszczepanowski.pl
Site URL: http://sebszczepanowski.pl
WordPress Path: /domains/sebszczepanowski.pl/public_html/
WordPress Content Path: /domains/sebszczepanowski.pl/public_html/wp-content
WordPress Version: 5.5.1
WordPress Multisite: -
WordPress Memory Limit: 128 MB
WordPress Debug Mode: -
WordPress Script Debug: -
Language: pl_PL

### Server Environment ###

Server info: Apache
PHP version: 7.1.9 - We recommend using PHP version 7.3 or above for greater performance and security. How to update your PHP version »
PHP post max size: 128 MB
PHP time limit: 180
PHP max input vars: 6000
Max upload size: 128 MB
MySQL version: 5.6.43-log
cURL version: 7.55.0, OpenSSL/1.0.1s
DOMDocument: ✔️
WP remote post: ✔️
WP remote get ✔️
GD library: 2.1.0

### Security ###

Secure connection (HTTPS): ❌ Your site is not using secure connection (HTTPS).
Hide errors from visitors: ✔️

### Active plugins (6) ###

Elementor by Elementor.com – 3.0.7
Limit Login Attempts Reloaded by WPChef – 2.15.2
Ninja Forms by Saturday Drive – 3.4.27
Portfolio Post Type by Devin Price – 1.0.1
Templates Patterns Collection by ThemeIsle – 1.0.9
Orbit Fox Companion by Themeisle – 2.9.17

Hi!

Here's couple of screenshots showing the process

Last one