The ordering system is problematic. I filled all the detail and full address. However, the phone number was not passed to GLS in the process. So they could not call me and because of that, parcel was stored at the depot. Thankfully, I watched the parcel at the tracking page.
GLS are probably cool guys, because I could re-route the package (using the chatbot on their webpage) to an address where I am currently residing, without additional charge.