This page in the Rachio Site
about 3/4 of the way to the bottom has the words, “DO NOT install the over of the base of the controller after it’s mounted in the enclosure.” OK - but the pictures show what I believe is the cover on the controller just below the words in question. (I am assuming the white piece of the controller with a round hole and a slot for the light strip is the cover.)
So should I or should I not put the cover on?