Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/Series0/EZR32WG/EZR32WG330F128R67/FPUEH/IEN#0x0
Interrupt Enable Register
FPIOC Interrupt Enable
FPDZC Interrupt Enable
FPUFC Interrupt Enable
FPOFC Interrupt Enable
FPIDC Interrupt Enable
FPIXC Interrupt Enable
https://github.com/cmsis-svd/cmsis-svd-data