Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wb0/STM32WB07/WAKEUP/WAKEUP_OFFSET#0x0
WAKEUP_OFFSET register
delay of anticipation of the Soc device to settle power and clock
https://github.com/modm-io/cmsis-svd-stm32