Apply for EEA4 when seperated from EEA husband

Hello,
I am non EEA national who married to Cypriot national in Cyprus in 2009 and then I joined my husband and moved to the Uk (He is working in the UK since 2007), I am separated since 2014 and I have a child was born at 2010, Now I should apply for my PR , Any one can help me that will cause me a trouble or refuse my application ? still we are married and he is happy to help me with supporting the documents like 5 years tax return and his passport to sending them to Home office.....
Also I am working (self employed) but receiving benefits...
Many thanks

If your EU national partner has been exercising his treaty rights for the last 5 years and is ready to help you then your application will not be refused because an informal separation does not cease the relationship. As a precaution only send the exact and relevant documents as stated on eea4 form and avoid to send the documents regarding your activities which are irrelevant. Because the more exact and relevant documents the more caseworker will not be known about this separation which can keep the case straight.