I'm building a SaaS related to cryptocurrencies, can I use paypal ?

[Antonhansel]

Hello,

I'm building a SaaS that allows users to automatically buy cryptocurrencies regardless of the price, at regular intervals.

My service doesn't hold or transact in cryptocurrencies but buys cryptos using the users API keys on trading exchanges.

I want to bill a monthly fee for this service.

Can I use paypal ? is this against your term of uses ?