Same problem in Estonia as well, just got contacted regarding it.

I replied to DHL with this link that has all certificates and waiting for the reply.

https://support.bitmain.com/hc/en-us/articles/224442167-Certificate-of-Conformity-for-S9

Guys in Estonia, did anyone of you check if we'll get a refund if the parcel is sent back to Bitmain ?