The module stops working after ~24 hours.

Hi all,
My modified peripheral program (based on the template) stops working after ~24 hours (upper limit - I didn't catch the exact moment). The program includes a 5-minutes timer that changes the advertising data (and also restarts the timer).
When I look at the module's current consumption with a scope, it looks like there's constant ~0.8mA consumption - i.e. the program doesn't go to sleep and does not broadcast.
I suspect one of two issues are happening:
1. An infinite loop due to a bug in my code - I don't see a reason why it would happen only after so many hours.
2. A memory leak - Not likely, the problem did not happen on the development kit, only on our burned module.
3. Clocks synchronization problem.

The third option looks most likely.

The only flag that I changed for the version that I burned on the OTP was the DEVELOPMENT_DEBUG (set to 0).
Is there another preprocessing flag that I should change, like a watchdog to synchronize the clocks?

Can you think of another reason for the problem?

Thanks,
Oren

----- Edit -----
有一个TODO-List-before-burning-OTPs regarding all the preprocessing parameters in da14580_config.h ?