You now have a dedicated BTC address per card. Anytime you send funds to this address, your funds will be automatically converted and loaded up after 1 confirmation on the blockchain.
You no longer need to specify how much you will send, nor do you have to send an exact amount! Under and over payments will just work as they should.
This is a huge upgrade for us and follows a similar upgrade for ETH and DASH wallet addresses earlier this summer. We hope you enjoy it!
– Shakepay team