Hang on android 8.1

Hi there,
I'm facing a strange issue. On Android 8.1, Notebook starts up and simply hangs showing its icon in the center of the screen. I have to force close it and relaunch, everything is back to normal: it works. After some time I launch it again, hang. Tried to clear cache, uninstall/install, just the same. Also it gives me no visible error.