So using an auto collector in the underwater barn is quite challenging. The hit box to trigger opening it to gain access to the items inside is in an odd location.
You can see my mouse in the bottom left of the photo that's the only place I can click to open it. Took me some time work out where I could access it.
I did just order the barn to be moved the day before unsure if that has anything to do with it.
But the seacow hit box is also quite large and encompassing. Hard to click on other animals when there's a seacow in the way.