Unable to add Device to Eligible Devices EAP for Big Sur

Hello,

I'm trying to add a device with Sophos installed to the EAP for Big Sur, but whenever I try to save the device to the list of assigned devices I get two error messages. 

"Failed to quit early Access Program" and "Error updating assigned devices, some changes may not have been saved" The list refreshes, and the change is not saved.

Is anyone else experiencing this, do I need to do something on the Mac end before it will allow Sophos to add the device to the EAP?

Thanks,

J