Offline Probelms HomeBase 2 and Sensors

Hello, maybe someone may help me.

I now use Homebase 2 With 2 Indoorcameras,9 Door/Window Sensors and One Keypad since 3 days. For two days it was working best, since last night sometimes the Home Base 2 goes offline (Every 3-5 min one time). It s reconnecting alone and goes online. If i update in the app, it says that 3 of 11 oder 7 of 11 sensors or else are Offline. Its always changing witch are offline if i Update…. New Installation of the whole System does not fit.
Any Ideas?

(Sorry for my Enlish, I am from Germany;))