In order to call Experts, you must have a credit card saved within your profile. You can add your credit card either during the sign-up steps, or afterward within Account Settings: from the main menu, tap your profile picture OR tap My profile -> Account Settings -> Credit Card.
Magnifi has partnered with Stripe to provide best-in-class payment handling and security. Your credit card data is securely held with Stripe; Magnifi never has access to this data.
Stripe is trusted by other tech companies like Amazon, Facebook, and Shopify. Stripe is certified as a PCI Level 1 Service Provider, which is the most stringent level of certification available in the payments industry.