Exception: SFW update folder is not writable

We get an error when save our key after saving our activation key. I have already tried a complete deactivation and removal, ensuring all tables were removed prior to re-installation. Below is the error;

Oct 16 2023 18:37:55: Error occurred while updating SpamFireWall local base. Exception: SFW update folder is not writable. in /home/****/public_html/wp-content/plugins/cleantalk-spam-protect/lib/Cleantalk/ApbctWP/Firewall/SFWUpdateHelper.php:419 Stack trace: #0 /home/****/public_html/wp-content/plugins/cleantalk-spam-protect/cleantalk.php(1181): Cleantalk\ApbctWP\Firewall\SFWUpdateHelper::directUpdate() #1 /home/****/public_html/wp-content/plugins/cleantalk-spam-protect/inc/cleantalk-settings.php(2612): apbct_sfw_update__init(5) #2 /home/****/public_html/wp-includes/class-wp-hook.php(310): apbct_settings__sync(”) #3 /home/****/public_html/wp-includes/class-wp-hook.php(334): WP_Hook->apply_filters(”, Array) #4 /home/****/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array) #5 /home/****/public_html/wp-admin/admin-ajax.php(188): do_action(‘wp_ajax_apbct_s…’) #6 {main}