OCPP Control Not Working

I’ve set up my new Grizzl-E Mini Connect with OCPP and it’s connected to Charge HQ. I can see the charger status and it’s reporting correctly on the CHQ dashboard, however commands I send are not working. If I try to change the charge rate or select “Stop” the charger continues to charge.

I’m not sure if this is an issue on the charger or an issue on the Charge HQ end, how do I determine what is happening?