Hi janecorke,
This does sound unusual, and thanks for sharing the detail. Please double-check that the email address is spelled correctly and is unique (not already used for another MYOB login or user), and ask the user to check their spam/junk and any “Promotions” or “Other” folders for the invite.
If everything looks correct and the issue is still happening, the next best step is to contact our support team. You can reach our Live Chat team via our virtual assistant, MOCA or by submitting a support case via MyAccount.
Regards,
Earl