when i press the yellow button I get back to this page. How else can I link my account?

When i'm trying to link my steam account i got a error {"requestId":"bb3189d2-3f6d-4623-880e-dea2ebc6ccda","errors":[{"status":"422","title":"Unable to resolve steam id","detail":"The Steam ID '76561198969873169' does not match any account.","code":"193","meta":{"args":["76561198969873169"]}}]}
What must i do to link my steam account