Greetings, let me introduce you to an exchange platform called "Global blockchain Exchange"
Global blockchain Exchange is a digital assets exchange built upon principles of decentralization, they seek to create an era of trust and universal acceptance for the Crypto industries.
They are in charge of encrypting users data and applying risk identification controls so that transactions done can be secure.
They also have a app you can download on your Android devices that gives you easy access to cryptocurrency trading.
Global blockchain Exchange supports the exchange of flat currency on their platform.
I recommend this exchange platform to traders willing to exchange dollar for Bitcoins and Ethereum.