Do I need to sign any contracts with third-party vendors separately from Hydrogen? March 17, 2021 16:53 Updated No. We have worked extensively with partners to streamline the onboarding process. Related articles Can I cancel my subscription at any time? Can I pay my subscription annually? If I exceed my plans limit, am I automatically charged for the overage? What is the minimum number of cards I need to order? Can I switch plans at any time?