Crj 700 Apu Start Apu door ? impossible to start apu after click open fuel

Hello, I’m having same issue. I already have changed the state to Cold and Dark as default one, and there is no sign of the APU door, I just have (----) on EICAS panel. Any tip to solve that. The curious thing is days ago i started the plane following the proper steps and I always got a sign of APU door CLSD on the panel.