We haven't received an emailed invoice for the last 4 months AND cannot download invoices either

For the last FOUR months we have not received an MYOB email invoice for one of our company accounts.  There's no problem for the other account.  We used to receive all invoices by email but this suddenly stopped for our main operating company four months ago.

Each month we do not receive the emailed invoice I make numerous phone calls and emails. I ask for the issue to be escalated and resolved but each time I'm assured that "the problem has been fixed" -- and that I can download my invoices any time.  I then receive an emailed invoice but ONLY after making a complaint.

After not receiving the emailed invoice once again, tonight I tried instead to download the current invoice but as the screenshot below shows, I can't even download invoices from the My Account page - the download button becomes greyed out with a red non-access symbol.   So MYOB itself cannot send or make its own invoices accessible to its client?!

Will someone actually escalate this to a billing/accounts specialist who will contact me and finally fix this ongoing problem?