Kakute F7 - TFmini issue

Hi, I am new to setting up Arducopter on Kakute F7. I have tried to install both the latest and stable version of firmware on Kakute F7, but still cannot get TFmini to work. In fact, the option of Range Finder has nothing to select for. Could someone offer any insight on this? Thanks.

Can anyone help? Anyone has success in connecting TFmini to Kakute F7? Thanks.