If you screw up on the order of the code for the button-style lockboxes, just re-enter it.
If the lockbox won’t open while you’re pressing the tab down, try jiggling the box while you pull on it. If it has been locked a long time, rain and moisture can get into the lock and cause it to rust.
The rose plate is the bracket that covers up the spindle where it feeds into the door. The spindle is the bar that connects the round part of the knob to the knob on the other side of the door. When you turn the door knob, this is the part that rotates to open the lock.
If you close your door and you can’t open it again, slide the front knob into the opening and turn it the same way you normally would.
Anything that fits into the holes will work. A thumbtack, unraveled paper clip, or sewing needle will work. You must push the pin or screwdriver all the way into both holes.
The shackle refers to the loop at the top of the lock that’s wrapped around your door knob.
This is going to send sparks flying, so take your time, go slow, and take breaks to give the blade time to cool down. You can buy an angle grinder online or from any home improvement store.
Work very slowly here and do your best to keep the blade from nicking your door.