Unable to email receipts to forwarding email

Hi! 

I'm trying to set up emailing receipts to my quickbooks account.

i followed the guide here Email receipts and bills to QuickBooks Online (intuit.com)

and both my email address and my admins email address are set to have permission to send.

However, when I send an email with mine [email address removed] which is my login and the email i'm sending from I get the following email 'Your receipt wasn’t received because it was sent from an email that’s not registered for receipt forwarding.' 

I can confirm my account has permission to send, it also has permission to create vendors etc and has admin access.

If i forward the email to my admin and she forwards it to our qbodocs email it works fine.