Recruiting process gone dark

Hi I'm hoping just to get some advice. I went through the whole Amazon phone rounds. I received and email saying that I was invited to the Seattle interviews and they were requested dates within the following three weeks of that email. That's was 4 weeks ago. I was contacted after that by phone saying that they didn't realize my start date was in May ( I'm graduating and they did know this) and that I was being moved to university recruiting and that I was still being flown out for the interview. Then it sounded last that my original recruiter was still handling my application. However I feel like I'm just being told things and that it is all slipping away. Any advice? I haven't received anything from my original recruiter since the first invitation... Panicking a bit.