I use the sample call as follows
WifiManager.getCurrentWifiSSID()
.then((ssid) => {
console.log("Your current connected wifi SSID is " + ssid)
}, () => {
console.log('Cannot get current SSID!')
})
And i get the result on android. I checked that the persmission are all there even though I have asked for them in the app
Your current connected wifi SSID is