All cryptocurrencies that are purchased or managed via the BISON app can also be withdrawn, provided that you are the sole beneficial owner of the recipient wallet address.
Additionally, you must confirm cryptocurrency withdrawals with your password and a 2FA SMS code. Withdrawals are only executed if you have confirmed that you are the beneficial owner of the recipient wallet and if the 2FA process has been successfully completed.
If you wish to completely disable the crypto withdrawal function for security reasons, you can do so under "Account" - "Security" - "Disable Crypto Withdrawals".
Warning: Reactivation is only possible through BISON Service and may take several working days!
More on this topic can be found here: Crypto withdrawal to your own wallet