this happened the first time so im thinking there is something with iOS15.
I opened to door with my keypad at 1:18 at night because auto-unlock didn’t work.
I locked Nuki over Alexa at 1:38 with a routine.
After I get up in the morning (still in bed and didn’t leave the house while I’m sleeping ) I unlocked my iPhone at 9:36 and Nuki opened the door directly by auto-unlock.
App 2.10 (2129)