Hi and welcome to JustAnswer,
Im so sorry that no one else has responded to you.
Apologies for my delay in replying, I only just came online and saw your question. Are you still looking for help with this?
Thanks for your response. Are you sure that your combination is correct?
Thanks for your response.
Initially, try to slightly bump the front door of your safe (where the mechanism installed) because it possibly have stuck up parts. If you able to able to access the internal mechanism try to spray it with WD40.
Also sometimes its battery problem, even you think your battery is OK but sometimes it doesn't have enough power to energized the actuator.
Please reply if you still have questions.
Hope this information will be helpful.
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where is access to battery located, can not find it?
Click this link to replace your battery. CLICK HERE
Changed battery, did other things you recommended, no luck.
Mechanic key can not overcome electronic one,despite it is turning well
The 4 (not 5 ) number key code, written on the mechanic key, when entered also did not help