Hi @idarek,
Sorry to hear that you are experiencing some issues with Hummingbird. I will try and answer all your questions.
If you enable CloudFlare, it is normal to see connections between your website and CloudFlare – some queries are offloaded to CF. This is actually a good sign, it means that CloudFlare integration is working. So if you see a connection every 5 seconds, that just probably means that someone has opened you page during that time. Or are you seeing some connections that you think should not be there?
Could you specify more details about your hosting? What PHP version are you using? What are the PHP memory limits? Some hosts set very low limits to the available resources and memory, or some themes and plugins can be poorly optimized and use up all the available memory. There are two possible solutions you can try to resolve this issue:
1. Add this to the very bottom of the wp-config.php file, right before the line that says, “Happy Blogging”:
define('WP_MEMORY_LIMIT', '256M');
2. Try adding this to your .htaccess file:
php_value memory_limit 256M
I will check and make sure that uninstall cleans out all the database records and cron events that were created by the plugin. Than you for reporting this.
I hope I answered all your questions and the recommendation above for the memory increase resolves your issue.
Best regards,
Anton