Thank you very much for your advice.
In the refusal letter sent by HO it says if you wish to apply in the different category you are welcomed to do so, but my only hesitation is how can I apply for PR if my Retained Right was refused....

Dear Sirs, I found myself in the situation where no one can give a definite answer...The last hope is your website which was helping me for past 5 years. I have applied for RRR after separation with my partner in September 2015 and on the 1 March 2016 received a refusal letter saying that you met ...