In-game Notifications disabled

I don’t get any notifications while I’m playing (like “building/unit created” or “Warning: You are being attacked by Player 2”)
I searched in Options , but I didn’t find anything related with notifications.
Can someone help me ?

Hmm, F1 toggles notifications if I remember correctly.

nope , F1 just toggle extended tooltips

was the dev/support team or community able to resolve this issue for you?