I ordered some filaments over 2 weeks ago

Latest tracking update was two weeks ago. Said the package had left Germany (I live in Finland). No update since then. When should you assume the package is lost and what do you do if it’s lost? It took me one week to get the printer when I ordered it after they had shipped it. The Filaments was shipped 15 days ago no tracking update since then. I don’t see why it would take more than twice as long this time.