as title say, the "External Fan Speed" is missing in GPU tweak II

I have 2 fan connected to the graphic card (ROG STRIX 2080 Super), they work well when connect to motherboard (ROG STRIX B550 E Gaming).

i have clic on the little circle with dots to seelect additionnal option to display in GPU Tweak II, but all box are tick already, and external fan speed is not listed.

i have uninstall reboot, reinstall and reboot again, still missing, and i dont know what to do next

thx for your help !