Curve Tap to Pay on GrapheneOS

Hi, happy GrapheneOS user on a Pixel 8 Pro here.
Does anyone in Europe use Curve tap to pay? At the moment I'm having a terrible experience with it.

Let me explain what I do, and tell me where I'm going wrong, because honestly I can't figure it out.

• Screen locked, I double-click the power button to bring up the Curve wallet
• I hold the device near the POS terminal
• It asks for authentication (fingerprint in my case)
• Then the POS asks me to present the card again
• I hold it near the POS again and if all goes well it goes through, or the POS gets confused and I have to repeat the whole operation, with the operator having to re-enter the amount

Isn't there a way to open the wallet and authenticate upfront so the transaction goes through without extra steps?