Stuck at Checking Compatibility

Hello. As stated in title, I am unable to start registration process. After installation of plugin and activation, only thing shown is Checking Compatibility, without ever finishing and letting me start integration.

WP info below:

### wp-core ###

version: 5.3.2
site_language: pl_PL
user_language: pl_PL
timezone: Europe/Warsaw
permalink: /%postname%/
https_status: true
user_registration: 0
default_comment_status: closed
multisite: false
user_count: 500
dotorg_communication: true

### wp-paths-sizes ###

wordpress_path: /home/users/labpharma-sklep/public_html/wp_labpharma
wordpress_size: 693,22 MB (726895074 bytes)
uploads_path: /home/users/labpharma-sklep/public_html/wp_labpharma/wp-content/uploads
uploads_size: 326,10 MB (341940401 bytes)
themes_path: /home/users/labpharma-sklep/public_html/wp_labpharma/wp-content/themes
themes_size: 6,09 MB (6390929 bytes)
plugins_path: /home/users/labpharma-sklep/public_html/wp_labpharma/wp-content/plugins
plugins_size: 124,41 MB (130456106 bytes)
database_size: 92,88 MB (97386496 bytes)
total_size: 1,21 GB (1303069006 bytes)

### wp-active-theme ###

name: GeneratePress (generatepress)
version: 2.4.2
author: Tom Usborne
author_website: https://tomusborne.com
parent_theme: none
theme_features: post-thumbnails, automatic-feed-links, post-formats, woocommerce, title-tag, html5, customize-selective-refresh-widgets, align-wide, responsive-embeds, custom-logo, menus, editor-style, wc-product-gallery-zoom, wc-product-gallery-lightbox, wc-product-gallery-slider, widgets
theme_path: /home/users/labpharma-sklep/public_html/wp_labpharma/wp-content/themes/generatepress

### wp-themes-inactive (1) ###

Storefront: version: 2.5.5, author: Automattic

### wp-plugins-active (30) ###

Advanced Dynamic Pricing for WooCommerce: version: 2.3.3, author: AlgolPlus
Autoptimize: version: 2.6.2, author: Frank Goossens (futtta)
Code Snippets: version: 2.14.0, author: Code Snippets Pro
Customer Reviews for WooCommerce: version: 3.99, author: ivole
Custom Product Tabs for WooCommerce: version: 1.7.1, author: YIKES, Inc.
Elementor: version: 2.9.7, author: Elementor.com
Elementor Pro: version: 2.9.2, author: Elementor.com
EWWW Image Optimizer: version: 5.2.4, author: Exactly WWW
Flexible Checkout Fields: version: 2.4.5, author: WP Desk
Flexible Shipping: version: 3.9.13, author: WP Desk
GP Premium: version: 1.9.1, author: Tom Usborne
Groups: version: 2.9.0, author: itthinx
Groups 404 Redirect: version: 1.4.0, author: itthinx
Import and export users and customers: version: 1.15.5.7, author: codection
InPost for WooCommerce: version: 1.3.5, author: Inspire Labs
Kadence WooCommerce Email Designer: version: 1.4.0, author: Kadence WP
Loco Translate: version: 2.3.1, author: Tim Whitlock
MC4WP: Mailchimp for WordPress: version: 4.7.5, author: ibericode
PayU Payment Gateway: version: 1.2.9, author: PayU SA
Quotes for WooCommerce: version: 1.6.2, author: Pinal Shah (latest version: 1.6.4)
Site Kit by Google: version: 1.6.0, author: Google
Variation Swatches for WooCommerce: version: 1.0.79, author: Emran Ahmed
WC Hide Shipping Methods: version: 1.3, author: Rynaldo Stoltz
WooCommerce: version: 4.0.1, author: Automattic
WooCommerce DHL: version: 1.4.21, author: WP Desk
WooCommerce Multiple Free Gift: version: 1.2.3, author: lilmonkee
WooCommerce Product Table Lite: version: 1.9.3, author: WC Product Table
WooCommerce Side Cart Premium: version: 1.2, author: XootiX
Wordfence Security: version: 7.4.6, author: Wordfence
WP Fastest Cache: version: 0.9.0.4, author: Emre Vona

### wp-media ###

image_editor: EWWWIO_GD_Editor
imagick_module_version: Niedost?pne
imagemagick_version: Niedost?pne
gd_version: bundled (2.1.0 compatible)
ghostscript_version: 9.05

### wp-server ###

server_architecture: Linux 4.4.202.core2.42 x86_64
httpd_software: Apache
php_version: 7.3.11 64bit
php_sapi: apache2handler
max_input_variables: 9000
time_limit: 60
memory_limit: 256M
max_input_time: 60
upload_max_size: 64M
php_post_max_size: 64M
curl_version: 7.38.0 OpenSSL/1.0.2d
suhosin: false
imagick_availability: false
htaccess_extra_rules: true

### wp-database ###

extension: mysqli
server_version: 5.7.28-31-log
client_version: mysqlnd 5.0.12-dev - 20150407 - $Id: 7cc7cc96e675f6d72e5cf0f267f48e167c2abb23 $

### wp-constants ###

WP_HOME: undefined
WP_SITEURL: undefined
WP_CONTENT_DIR: /home/users/labpharma-sklep/public_html/wp_labpharma/wp-content
WP_PLUGIN_DIR: /home/users/labpharma-sklep/public_html/wp_labpharma/wp-content/plugins
WP_MAX_MEMORY_LIMIT: 256M
WP_DEBUG: false
WP_DEBUG_DISPLAY: true
WP_DEBUG_LOG: false
SCRIPT_DEBUG: false
WP_CACHE: false
CONCATENATE_SCRIPTS: undefined
COMPRESS_SCRIPTS: undefined
COMPRESS_CSS: undefined
WP_LOCAL_DEV: undefined
DB_CHARSET: utf8mb4
DB_COLLATE: undefined

### wp-filesystem ###

wordpress: writable
wp-content: writable
uploads: writable
plugins: writable
themes: writable

### google-site-kit ###

version: 1.6.0
php_version: 7.3.11
wp_version: 5.3.2
reference_url: https://labpharma.pl
amp_mode: no
site_status: not-connected
user_status: not authenticated
active_modules: site-verification, search-console
required_scopes: 
	openid: ?
	https://www.googleapis.com/auth/userinfo.profile: ?
	https://www.googleapis.com/auth/userinfo.email: ?
	https://www.googleapis.com/auth/siteverification: ?
	https://www.googleapis.com/auth/webmasters: ?
search_console_property: none

The page I need help with: [log in to see the link]