When customer pay by card a tip option is presented. This is not available for cash payment? Can it be made available?
Yes, but only if the tip screen is presented before the payment is tendered (a setting we can set on your test account), or if you present the tip screen yourself (https://poynt.com/working-with-the-second-screen/) and suppress it in the Payment Fragment flow via Payment.setSkipSignatureScreen(true)