Hi SilvaKuff,
For help with iOS notifications, if you notice the issue occurs when looking at your device, check your Attention Aware settings first. The information below found in the article here can help. Turn Attention Aware features on or off on your iPhone or iPad Pro
"What are Attention Aware features?
Even if you don’t enroll in Face ID, the TrueDepth camera* intelligently activates to support Attention Aware features. With Attention Aware features, iPhone can check whether you’re paying attention to your device and automatically take action. For example,
- When you’re looking at your device, your display will not dim until you stop looking at your device.
- If you're looking at your device, it will lower the volume sound of your alerts.
If you don’t want to use these features, open the Settings app, tap Face ID & Passcode, then turn off Attention Aware Features."
The section "Change how notifications appear" from the article here: Use notifications on your iPhone or iPad can also help you check your settings for specific apps.
Be sure to also check for any Focus settings you might have enabled: Use Focus on your iPhone or iPad
Should the issue continue and your iOS is fully updated, reach out to Apple Support directly to further assist.
Contact - Official Apple Support
Contact Apple for support and service - Apple Support
Cheers!
