Sonoff usb dongle disabled

Hi. I am completely new to all this except had some wifi devices which i set up through Google Home. I’ve tried to ‘up my game’ and bought a Home Assistant Green and also a Sonoff Zigbee USB dongle last week and then a couple of Zigbee blind motors.
I installed the dongle and HA says “this entity is disabled”. I can’t for the life of me work out how to fix it. Could really use some help to point me in the right direction? thanks