It’s likely the update enabled Online Invoicing / OIP (Secure Invoicing) on AccountRight, which now adds a QR/payment page to printed Account Right Live invoices. In Account Right Live , that second page is generated by the PDF/print flow when OIP is active.
Right now, this is a product limitation: the QR code can only be removed by turning OIP off; it can’t be switched off just for printing while keeping OIP enabled.
In AccountRight desktop, go to:
Setup → Preferences → Emailing tab → Edit payment options → sign in if prompted → on Online invoice payments, untick Allow online invoice payments → save.
Hope that helps.