To link your RBS current bank account to Plum you need:
1. Customer Number
This is your date of birth (ddmmyy) followed by your unique number which you need to log in to your Digital Banking services.
2. Security number
It is 4-digit number you choose when registering for Digital Banking or Telephone Banking. It can be different from the PIN you use at cash machines. RBS asks you for 3 random digits. To link your RBS bank account to Plum you need to enter THE WHOLE number.
Your password should be 6-20 characters long and contain letters and numbers. RBS asks you for 3 random characters but Plum requires THE WHOLE password.
If you have forgotten your log in details you can find instructions here.