Hi,
We’ve already been in touch via email, so I’ll just summarize the answers here for other forum visitors as well.
If Cash is set as your default payment method, the calculator for receiving and returning cash will appear immediately after clicking the Cash button. However, if a different payment method is set as the default, you’ll need to click the Cash button twice — the first click selects cash as the payment method, and the second click opens the calculator.
You can find the payment method settings directly in the app under Settings - Payment methods settings.
At the moment, Elementary POS unfortunately doesn’t support cash payment buttons with specific banknote values. That said, this is something we’re considering adding in the future.
I’m really happy to hear that you’re satisfied with our customer support! :-)
Best regards,
Helena, Elementary POS team