Looking Advice Related To Retention

Hi Member
Im looking a advice from you

1: I’m Holding a eu3 permanent stamp 4EUFam for 10 years on behalf of my eu spouse after sometimes that we separated now i got the divorce recently should i need to apple for Retention or i need to inform to Eu Treaty Department about my current circumstances.My EU spouse living in the state and working full time

2: During the process for apply the citizenship we was living separately and i mentioned about the Separation should i need to inform the Citizenship Department as well