Unreliable continuous mode and notification from Nuki Opener

Hey folks I have been using Nuki opener for a month and the “continuos” mode (that opens the door when someone rings the doorbell) is very unreliable, someone it works sometimes it doesn’t, sometimes the person needs to ring the bell twice and sometimes not even doing that makes it work.

On top of that, the notifications coming from the opener events (natively via Nuki web and Nuki app) are delayed by 30 seconds…

My intercom: 1740/90

Any ideas how to improve/fix that?