Zwift Ride loud grinding sound

I recently purchased a Zwift Ride and Kickr Core and have done around 5 rides.

When using it today there was suddenly a very loud grinding sound from the back of the bike. It happened a few times intermittently and is also noticeable when I stop pedalling. I recorded a video but it does not pick up the sound very clearly.

I also think that the bike is leaning very slightly but regardless of what I do cannot seem to get it perfectly straight. I do not know if this is causing the issue. I am not sure if it could be the thru axle as there are some marks on it.

As far as I am aware I have followed the instructions correctly and have inserted the drive adapter on the right hand side of the bike and the 142 adapter on the left hand side.

I have removed the thru axle and seated the Zwift Ride onto the Kickr Core a couple of times but the loud grinding sound keeps happening.

Anyone have any ideas what could be causing it?