[Observium] ping probe not running

Hi, i have created a bunch of ping probes in the past and never had an issue, however, on this particular install...I created a single ping probe and it has not run after days. How do I troubleshoot this issue?

Thanks [cid:image003.jpg@01DA6955.14B8C140] [cid:image004.jpg@01DA6955.14B8C140]

Tony