We released the new Android app version 2.6.1-Beta.
What’s new?
• Increased Opener compatibility
• Performance improvements and bug fixes
Please update your Nuki app and give us your feedback!
Opener Sound Volume Bug still present 
@PharaDos: Correct, this is not yet addressed in this version as there was a deeper cause behind which needs to be addressed first.
No Problem, just mention it.
it is here sometime not clear with beta/release address errors
Because both descriptions could address it:
• Increased Opener compatibility
• Performance improvements and bug fixes
Just sent a log file to developer.
following issue was happened:
1.) enter geofance area, Smart lock 1 opens but not smart lock 2, opener in Ring mode
2.) enter Area of Smart lock 3 but no open detected, so i had to open it manualy
Config:
enter geofance: open SL1 and SL2 and aktivate ring to open
SL detection: open SL3