For the part of the tax year that he was considered a resident of Canada
he needs to report his world income. World income is income from all sources inside and outside Canada.( that is after he landed, so after October 2018 ,if he was still making money ) . so that covers the part of the comments saying its a fraud ..by law you dont need to ,for new residents for the previous period .
for he second part ,he needs to provide a proof through his notice of assessment ,and this is my confusion how can he prove it if its not in the NOA ?
and when he communicated with IRCC was it with supporting documents !! what are the documents in that case .and two weeks ago a refusal and then today medical !! a big glitch here in the system ,if he doesnt qualify ...he doesnt qualify .its not the communication stating that he had other income that changed the case for not eligible to accepted ,its a glitch