The debit card is connected to the available balance on your bank account.
In order to add money to the account, you can make a domestic wire transfer, an ACH, a Direct Deposit or add your account to your payment service provider and marketplaces, such as Amazon, Stripe, and PayPal.
Other helpful articles:
How to add funds to your Globalfy Business Bank Account
How to make a domestic transfer
Can I make International Transfers with my Globalfy Account?