It takes some work but you need to do the following:
1) Have any QR Code Reader installed
2) Set up "Two-Step Verification" on your Amazon account.
3) You will need to use the "Authenticator App" as your backup method
4) Download an Authenticator App program. I used "Google Authenticator"
5) When you go to add your Amazon account to Delieveries App type your password then add in the code you get from Authenticator app. Example if your passwork was bigfatdog and the authenicator gave you the code 123456 the password you need use add your Amazon account to delieveries app would be bigfatdog123456.
If you did all this correctly you should now have your Amazon account added and you will see your orders added.