Hi Dom1982
Thank you for your post. We understand your frustration with this, and we do apologize for the inconvenience. We appreciate your reaching out and have passed it on to our teams.
Upon checking Sales Invoices are displaying and opening perfectly fine now. If you still having the same issue until now, we recommend clearing the cache and cookies of your browser or trying to use different browser as well. This will help you show those Sales Invoices on your MYOB Account.
Please let me know how you go.
Cheers,
Shella_A