How come all my apps like my messenger Facebook ect keep saying no internet connection but I’m connected to my Wi-Fi and my safari and chrome work just fine just not my communication apps

All of my apps keep saying connection but I am connected to my Wi-Fi and it is only my communication apps like my messenger and Facebook and other communication apps my Fetch Rewards and a bunch of other apps but my safari and chrome work just fine I am connected to Wi-Fi because I have no cellular plan I don’t have enough to pay my bill until next week so using Wi-Fi is my only option right now but it won’t work