Send alert from Grafana to Opsgenie = response code 422 unprocessable entity

Hi All,

I have setup a contact point in Grafana (version 10) to send to OpsGenie and put in the URL and API key but when i try to send a test i get response code 422 unprocessable entity. I have already contacted OpsGenie support and on thier end using thier Grafana it works fine with our API key. Any ides what the issue could be ?