My watsapp doesnt get connected through college wif

my watsapp remains in connecting stage and doesn't even get connected through our college wifi

bbut they work perfectly fine at home

And my friends who have android or any other phones ,for them the watsapp gets connected through college wifi

i tried resetting my network settings

but still my wats is in connecting stage

Y Is this happening in iphone alone?

Plz help

any way to fix this

plz reply