How to pair Ikea Fyrtur blinds?

I am using [RELEASE] IKEA FYRTUR Window blinds as a custom datahandler on my 2 Fyrtur’s I just got. When I paired, it automatically selected that DH (at the bottom of the dropdown list, below the Z’s, since it’s custom). On the new smart things app though, it seems not everything is working (only a command section and a % section to command in that way).

I also can’t figure out how to set the minimum % (since the blinds are longer than my windows). Right now when I click “close” it expands the entire roller, incorrectly.

I would be interested in trying the stock DH by Samsung/SmartThings, but I can’t find any other one in the dropdown, what should I pick in the IDE?