I have some problem with my new Samsung galaxy s 23 ultra stack when i use

[Alemina]

Messenger 

Even no pop notification my signal App.

[Helenna]

Hi, we request you to write back to us with the detailed description of the issue to assist you accordingly.

[RedDogRabbit]

If you're saying that you don't get Notifications for these two apps, Go to Settings > Notifications > App Notifications > "All" & Search for Messaging & Signal > Check that you have Notifications Toggled ON for these two apps.