hi.
 i have qustion.
1. i use mobile wallet. and want to sent some graft to cryptopia. for cryptopia i need put PaymentId in tx.
cryptopia "Make sure you use your PaymentId when depositing or your deposit will be lost."
where in mobil wallet i can put payment id. and if i use qrscaner it paste wrong address in send field.
2. how much coin need for supernode. plz give me a link with "how to install supernode"