WP-cron not running.

I’m fairly certain that wp-cron is not running. Scheduled posts get missed and other plugins that rely on the service also show that the “cron” doesn’t run.

I have checked my wp-config, and there’s no alternate cron or disabled cron happening there. I have setup the wp-cron control that changes wp-cron to an actual cron service, I have manually simulated the cron running and nothing seems to work.

How can I get wp-cron working again in any form?