Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wl3/STM32WL33/MR_SUBG/AGC4_CTRL#0x0
AGC4_CTRL register
Signal threshold for the autofreeze feature.
https://github.com/modm-io/cmsis-svd-stm32