@zenbaga this is an old issue to be honest. All this drama about notifications started with Flyme 4 and hasn’t been properly fixed since then. What you can try as of now is to allow the apps to run in background over the Security center (there is a permissions tab). I played around with my settings there and managed to receive around 70-80% of all messages on time. Thats still not a real fix, but better than no notifications at all.