Hi mariusmuntean,
We'll be glad to assist with your Notifications issue. To start, you'll need to make sure notifications are set properly, or you do not have them linked to a Scheduled Summary. Information related to this can be found here: Change notification settings
"Change notification settings
Most notification settings can be customized for each app. You can turn app notifications on or off, have notifications play a sound, choose how and where you want app notifications to appear when your device is unlocked, and more.
- Go to Settings
> Notifications. - Choose how you want notifications displayed on the Lock Screen:
- View just the number of notifications: Tap Count.
- View the notifications grouped into stacks by app: Tap Stack.
- View the notifications in a list: Tap List.
- When notifications arrive, you can change the layout by pinching the notifications on the Lock Screen.
- To schedule a notifications summary, tap Scheduled Summary, then turn on Scheduled Summary.
- Select the apps you want notifications for in your summary, set a time for delivery of your summary, then tap
at the top left. (See schedule a notifications summary.) - To choose when you want notification previews to appear, tap Show Previews, select an option—Always, When Unlocked, or Never—then tap
at the top left. - Previews can include things like text (from Messages and Mail) and invitation details (from Calendar). You can override this setting for individual apps.
- Tap an app below Notification Style, then turn Allow Notifications on or off.
- If you turn on Allow Notifications, choose when you want the notifications delivered—immediately or in the scheduled notifications summary—and turn Time Sensitive Notifications on or off.
- For many apps, you can also set a notification banner style and turn sounds and badges on or off.
- Tap Notification Grouping, then choose how you want the notifications grouped:
- Automatic: The notifications from the app are grouped according to organizing criteria within the app, such as by topic or thread.
- By App: All the notifications from the app are grouped together.
- Off: Turn off grouping.
To turn off notifications selectively for apps, go to Settings > Notifications > Siri Suggestions, then turn off any app.
When you use Focus, it delays the delivery of notifications on iPhone to prevent interruptions. You can schedule a time to receive a summary of the notifications you missed. See Schedule a notification summary."
As noted there, a Focus can also cause similar behavior when enabled. We'd recommend going through this entire list and making sure all notifications are set up properly.
Cheers.