Thank you for running the bnsupport tool. I visited your website and I detected a couple of things:
- It looks like you didn't enable the HTTPS redirection. You can do it following the steps in that guide
Note you only need to add the next line in the mentioned place
return 301 https://$host$request_uri;
- When accessing via HTTPS, although your SSL certificate is valid, the "not secure" message is shown in the navigation bar because at least one of the links in your website is using HTTP instead of HTTPS. You will need to fix it in the WordPress administration panel, probably under Media Library or in your theme settings.
Apart from that, I found the next errors in your Apache log file related to the theme
2020/07/07 13:27:13 [error] 17696#0: *2826 FastCGI sent in stderr: "PHP message: Astra: db version updated successfully!" while reading response header from upstream, client: 184.108.40.206, server: localhost, request: "GET /product/4styles-anti-theft-women-swimming-backpacks-ladies-large-capacity-swimbag-waterproof-oxford-backpacks/ HTTP/1.1", upstream: "fastcgi://unix:/opt/bitnami/php/var/run/www.sock:", host: "www.bestoffer.com.ng"
2020/07/07 14:29:13 [error] 17696#0: *2964 FastCGI sent in stderr: "PHP message: PHP Fatal error: Uncaught Error: Call to a member function enqueue_styles() on null in /opt/bitnami/apps/wordpress/htdocs/wp-content/plugins/header-footer-elementor/inc/class-header-footer-elementor.php:253
#0 /opt/bitnami/apps/wordpress/htdocs/wp-includes/class-wp-hook.php(287): Header_Footer_Elementor->enqueue_scripts('')
#1 /opt/bitnami/apps/wordpress/htdocs/wp-includes/class-wp-hook.php(311): WP_Hook->apply_filters(NULL, Array)
#2 /opt/bitnami/apps/wordpress/htdocs/wp-includes/plugin.php(478): WP_Hook->do_action(Array)
#3 /opt/bitnami/apps/wordpress/htdocs/wp-includes/script-loader.php(2294): do_action('wp_enqueue_scri...')
#4 /opt/bitnami/apps/wordpress/htdocs/wp-includes/class-wp-customize-manager.php(454): wp_enqueue_scripts()
#5 /opt/bitnami/apps/wordpress/htdocs/wp-includes/class-wp-customize-manager.php(551): WP_Customize_Manager->wp_die(0, 'Non-existent ch...')
#6 /opt/bitnami/apps/wordpress/htdocs/wp-includes/class-wp-hook.php(287): WP_Customize_Manager->setup_theme(" while reading response header from upstream, client: 220.127.116.11, server: localhost, request: "GET /?customize_changeset_uuid=e397c2a6-f433-426a-a320-ca2ca6e4f0d6&customize_theme=astra&customize_messenger_channel=preview-0 HTTP/1.1", upstream: "fastcgi://unix:/opt/bitnami/php/var/run/www.sock:", host: "bestoffer.com.ng", referrer: "https://bestoffer.com.ng/wp-admin/customize.php?theme=astra&return=https%3A%2F%2Fbestoffer.com.ng%2Fwp-admin%2Fthemes.php"
Hope it helps,