Wiser KNX app. Push notifications

[Engine]

Hello. I use Wiser For KNX "LSS100100" and Wiser KNX app on iPhone. I have one unusual issue with push notifications.The problem is that sometimes i receive push notifications, but sometims i don't. How can this problem be solved and what could it be related to?

[Daniel]

Contact SE support regarding this, this is fully done by SE.