[Green314]

First and foremost, you need to establish who's responsible for loss of goods during transit.

I do not know how to understand it.

Assuming they are, there's no need to complicate the SE by boxing (showing signs of tampering etc), when the missing Item method Is based on the same principle- either way, the Item Is missing.

Yes, thinking about it, it's a waste of time, there are ways of SEing them more simple.

As for the DNA, It depends on who the carrier Is, whether they require a signature on delivery and If not,

I did searched information about which carrier they use, but I haven't found anything.

will they take photos at the premises. Alternatively, you can opt for the universal method, namely the "wrong Item received".

Even if they would take the picture, the package may be stolen when they go away.

I could do the wrong item received yes, but I would like to try it in the future, not now.
Thank you.