Can't add Yeelight hub E1 to SmartThings V2 as thread network router

Can’t add Yeelight hub E1 to SmartThings V2 as thread network router. When I’m in SmartThings and try and add my device it provides me the E1 hub as the thread Network but then asks for a 32 character network key which I don’t have access to. I have tried using the API to access the E1 hub to get the network key but that does not work I’ve even tried using thread tools app but since there’s no network credentials I can’t access it through thread tools either. How can I get the 32 character network key?