Too many 3rd parties with your information. I they use a 3rd party to link your bank account. If you want to transfer cryto to an external wallet you'll have to download another app. If you wanna withdraw money after selling cryto, almost impossible. They have a handful of banks they'll work with. I tried three of them with no success. Support can't help. My bank account was good enough to purchase but not to withdraw.. I did the chat you basically told me to figure it out myself.