I know the fact that relationship interviews are not friendly but we're not scared from that, we were hoping to get aip but looks like it is going to take longer. We also got an email from them back in June saying that they have sufficient evidence to support our relationship and no need to send more, I will be surprised if we have relationship interview after this email.Generally this means IRCC has concerns about the relationship. There's a good chance an interview for the applicant will be required. I would collect additional and more current proof to support that your relationship is genuine.