Nuki SmartLock 2.0 problem with connecting - bluetooth probably

Hi, from yesterday afternoon I have problem with my SmartLock 2.0. I can’t connect with iOS Nuki app, only bridge can connect to SmartLock, but does not provide current state to Home Assistant via API.
I did factory reset and now I find SmartLock with bluetooth, but I can’t do initial calibration because SmartLock bluetooth keeps dropping out. This error is also visible in Home Assistant log, see picture.
Does anybody know how to solve this problem?

Thank you.