Actually went in there a few minutes ago and tried the safe just for the heck of it and it opened right up. I left the door open and engaged the lock a few times and the keypad worked every time. My plan is just to leave the door open till I get the new keypad installed. At least I won't have to pay a locksmith this time.
Inside the actual electronic lock assembly ( not the keypad ), there is a tiny solenoid that can start to fail or stick.
If the solenoid is failing or sticking then a new "keypad" won't help.
I suggest you leave it unlocked and buy a new "mechanical dial" lock. S&G (Sargent & Greenleaf) Dial Locks will run you approx $100, and you can install it yourself in about 30 minutes.
If you really like the electronic type, then buy a (LaGard) Electronic Lock and you can install it in about 15 minutes.
For either type, just make sure you order the correct
bolt orientation. For example; Right Hand (RH), Vertical Down (VD), Left Hand (LH), and Vertical Up (VU)
You can view the actual lock mechanism by removing the cover on the inside of the door.
Verticle Down (VD) orientation is quite common as seen in the picture above this post.
If you want something a little more expensive AMSEC also makes a few locks of their own proprietary design.
IF you need to have the safe drilled and opened, then you will also need the hole welded shut. Depending on the method used, the smoke and fumes from this can be annoying inside your home.
If you don't have the hole welded, then anyone can gain access to your safe, through the previously drilled opening to your lock mechanism.