Turned down from Croydon PEO

Hello,
My partner and I went to Croydon yesterday for his ILR appointment and we have been turned down at the reception - SET(M) not right form and was given EEA2.
Our situation:
We are living together for 4+ years (not married) and have a 3 years old child.
My partner - he The Gambian ,he was removed as overstayer in June 2007 and in August 2007 he came back with 2 years visa to join spouse (wrong endorsement from my previous post).
I am from Latvia,but I never been working in the UK and I don't have Worker registration as my partner support us.
How do you see this situation, SET(M) or EEA2?
Will appriciate your advise.

It will probably be easier if you continued in your original thread.