Where did you send it? I have only used Bittrex and that shows that Byteball wallet is currently offline because of the full node upgrade.
I haven't used it used any of the exchange bots in wallet app, so I do not know if they have upgraded and working, but either way, it could take 5-15 minutes to receive the Bytes and hours to send BTC, so I would recommend you to use Bittrex or UPbit instead.