Yes, this is a condition of your rental, unlock the combination lock from the parking stand and then lock the bike securely again at the end of your journey with the same code. Use it too when you are taking a break during your rental.
Our ebike and ecargobike have a combination lock (the code for the lock is in the name of the bike in app). Use the combination to unlock the bike from the stand and lock it again with the combination at the end of your ride.
If you are taking a break during your rental, you will also need to the secure the bike with the combination lock. Always lock a MOBY bike when you are leaving it unattended as losing the bike will incur a penalty.