Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32wl/STM32WL5x_CM0P/IPCC/IPCC_C2CR#0x0
IPCC Processor 2 control register
RXOIE
TXFIE
https://github.com/modm-io/cmsis-svd-stm32