Forcing waking up MKRFOX1200

Hi,

I'm using the base code from Sigfox library to read a sensor and send the info. Sometimes the system did not wake up, I don't know why, has battery, and all is ok. Just push the power button and the system sends the info again.

I don't know why, but is it possible to force the machine wakeup nevertheless what happened? I'm really stuck in this issue, the problem is I don't know why the board stops

thank's