No push notifications while on wifi

[Android Central Question]

So I have the note 9 and recently all of a sudden I stopped getting push notifications from apps like messenger, Facebook, snapchat and Instagram. Only when I'm connected to wifi. If I disconnect wifi I'll receive all my notifications at once. What the heck is going on? I haven't changed anything. It just randomly happened.

 

[B. Diddy]

Welcome to Android Central! Does this happen on any wi-fi network, or only a certain one? Are you otherwise able to access the web normally on wi-fi?