If you wish to sign up using your xero account then just follow the below process. Xero will then handle the billing via stripe.
1. Go to the sign up with xero page
https://acereceipts.com/register/xero
Click on the sign up with xero button
2. Log in to Xero and select the tenant
Now you will need to log in to your xero account, and do the 2 factor authenticator. After this, choose the tenant that you would like to be set up as your primary account, so that you can proceed.
3. You will then be redirected back to Ace Receipts
Your account is now created and you have begun your free 7 day trial.
You will also be sent a password to use if you want to login using your email and password.
After this you will need to create the connection to xero so that the data can be transmitted.
Go to https://acereceipts.com/xero/settings
After this you can then import bank accounts, accounts and contacts from the settings page