This is a known issue for some. There is a beta version out there (1.1.6r1) for both HA and Apple users that allows you to tune the switch to the specific dumb switch installation. With HA there is a mode-select dropdown called “Dumb Test”. For Apple Home since it does not support mode-select you need to use quick tap sequences.
More info here:
And here:
If you are an Apple Home rather than HA user you will need to contact @EricM_Inovelli by PM for installation info.