Scottoiler gone bad?

[Gnasher]

Still not sorted out. 
Apparently, the package returned.
I had ordered to my warehouse in Germany, when I bought it originaly (on German Amazon.de).

Do you live in Germany or Serbia?

It arrived there first.

Post arrives only once, did someone else forward it on?

So, for the replacement shipping address, I asked if they could ship there, and sent precise info ("Name: company-name; Last-name: my-mailbox-code; Address: xxx; Contact phone in Germany:... etc.).

Turns out they sent the package to my name (not the Name&Last-name I sent in the instructions), so the package came back (first time I've had that hapen after dozens of packages there over the years).

If the package was in your name and sent to the correct address as you mentioned who rejected it?  It won't be anything to do with Scott Oil they sent it someone in Germany rejected it. 

Now Scottoiler wants me to pay for a tracked package.  I don't plan to pay for that. Based on the two units in my city (mine and friends') - it is a very small sample but I would rather not add any more money or time to what does not look too promising.

You can't blame Scott oil for someone returning the package, they've already paid for it, why should they pay again for someone not accepting it.  As mentioned your oiler is damaged and they offered to replace it.  As you said Amazing service.  You've decided not to continue so what are you complaining about?  If the postage is less then a new unit you're ahead it's a no brainer.

It used to be awesome. Now I'll probably switch to more ordinary ways of lubing the chain - with all the pros and cons of that.

It still is, you've decided to give up on it.

Unfortunate, but that's life, modern market, and life in Serbia. 
This may be an isolated unfortunate case - but it is what it is.

That's were your issues lies not with Scott oil.