Rattle in the rear right section

[Cuprabee]

Hi,

I have a Cupra Ateca, this rattle has plagued me for a little while now.

I have taped back seat latches and rear trunk but the sound is still there.

Don't know if I need to tape the rear seats too.

Any ideas? This is driving me crazy.

Video: https://jumpshare.com/s/kwLNPTjUYCSMAZ02GNF2