i just had a very sad news today as my application for ILR been rejected

the application been made in 29/03/2017
i received emails every month
1st September received letter said that the application been rejected. I will copy the all letter and i need your help and advice.
dear.....
thank you for application fro settlement( protection route) dated 29/03/2017
form set(P) application are for anyone who has been granted 5 years refugee leave and is now applying for settlement in accordance with the published home office asylum instruction on refugee leave. it is also for anyone who has been granted 5 years limited leave to entry or remain on grounds of humanitarian protection, since august 2005.
your application has been rejected as our record indicate that you have never been granted a period of leave in either of the categories stated above.
application forms for leave to remain are only available from our website at www.ukba.homeoffice.gov.uk. should you want to make a fresh application you will need to complete the form/s for the relevant PBS category. advice can you also be sought from the immigration enquiry bureau on 03001232241.
i came to the UK as family reunion (in March 2014) as my husband granted refugee status. but we separated in year time and now i live with my British partner because my visa expired in same time with my ex husband and then i applied for ILR.
could anyone explain to me the letter which been sent from home office and whats solution to apply or get any other advices.
thank you everyone