Flux S Noise + cassette

[Djang]

Hi all,

I justed wanted to start my indoor training again after some weeks of resting. I noticed some strange noise coming from my Flux S unit. I made a video cause this will be more clear: https://youtu.be/CVef8koMwSA
The sound is not continuous but appears when pushing the pedals. Also the cassette or body seems to be rather loose. Of course we are just 1 month after warranty expired...
Any thoughts?

[Kotts]

It looks as though the freehub has come loose from the trainer. IIRC from what I've seen, you should be able to tighten that back down by removing the QR skewer and tightening the hub with a 5mm hex key.