The SALES link has disappeared from the left side menu. Is there a way of getting this back?

I can shed a light on that, wgoss44.

We've rolled out an update in QuickBooks Online's interface. A new left navigation menu is being made available to help easily track the product/services you're selling and the status of your sales transactions. We've changed the Sales menu to Invoicing menu and rearrange the tabs so you can easily view the open and paid invoices. Take a look at my screenshot below:

In addition, reverting back to a previous interface is unavailable since the processing and data storage of QBO goes through via Cloud. I'll take note of your ideas and suggestion to help improve your experience in QuickBooks.

I've also included an article that will help you manage your sales and unbilled items like estimates, time activities, charges, or costs: View sales transactions.

I'm still here if you have further questions regarding QuickBooks' interface. Just add the details below, I'll respond as soon as I can.