Thinka uses Apple HomeKit's definition of up/down. Up is 100% (all light) and Down is 0% (no light). Therefor it is important to program your blinds in ETS correspondingly.
In case something is not clear or not working according to your expectation you can contact us, and we will provide instant feedback. We can be reached by email at support@thinka.eu, or by phone at +31-20-2420666