Hi Stix17 ,
I'm sorry to hear about your difficulties in inviting a user. Generally, this error message only appears if the login you are using to invite them is not an administrator for that specific file. I recommend switching to an administrator email address and retrying the invite.
If the issue persists after that, you may need to visit help sites like myob.com/support or myaccount.myob.com to find MOCA, our virtual assistant. Use MOCA for immediate queries and assistance. If MOCA can't help, you'll be automatically directed to our live chat team for deeper troubleshooting.
In the meantime feel free to create a new thread if you need any other help.
Thanks,
Genreve