If you have to send it back, I don’t believe grobo will send you a new box just for that or cover the cost of materials if you took it to Fedex or UPS.
Edit: I should elaborate on this. I’ve not seen many, or any needing to be returned for service. Most parts are EASILY serviced by the user if need be. IE… I needed a new LED stack. Grobo sent the part as well as detailed instructions and took me less than 30 minutes. The only way you would need to send it back is if it’s completely screwed which I haven’t seen yet on the forum.