Although I believe that the direct exchange between Paypal and USD can only be via an intermediate currency there are some points that stopped me on this page ----> https://m.raison.ai/about/terms:

 - Wallet: you say that your service offers a wallet while withdrawals are only done through a third party 'your server" and not the user.
 - bank transfer: The text says on a bank transfer and not PayPal?
 - There is no mention of the conversion between PayPal and BTC with a blur in a lot of information.