Howto deinstall Sophos endpoint without the UTM anti temper key.

Hello,

I'm using Sophos UTM home. And used that to install sophos endpoint control. Only, this is no longer supported by Sophos UTM. So i wanted to migrate to Sophos home. But how can i de install, the endpoint manager menu is removed from UTM but i have no clue on the anti tamper key. 

Is there a way to resolve this?

Regards,

Arjan