The keyholes on your suitcases are TSA airport authorised locks, meaning only TSA officers will have the key required to unlock the suitcase via this lock.
The purpose of this lock is so that TSA officers are able to access the suitcase if need be.
Your suitcase opens via the combination lock.
To reset the combination lock, please follow the instructions below:
1. Enter the current combination, then use a pen or something similar to hold the small button next to the lock down.
2. Following this, change the combination, then release the button.
Your new combination will now be set.