You can try making a Federation query yourself: https://stellar.github.io/js-stellar-sdk/FederationServer.html#.resolve
And seeing whether it works or not.
StellarSdk.FederationServer.resolve('bob*stellar.org')
.then(federationRecord => {
// {
// account_id: 'GB5XVAABEQMY63WTHDQ5RXADGYF345VWMNPTN2GFUDZT57D57ZQTJ7PS',
// memo_type: 'id',
// memo: 100
// }
})
.catch(err) {=> console.error(err)); }