If the HP Smart App is not opening, working, or detecting the printer, use the Diagnose and Fix button and see. More suggestions in this post.

HP’s Smart Tank 7602 is a multi-function printer that can scan, copy, and fax. It’s also an inkjet tank, so you can refill it with bottles of ink and keep printing for a long time.

The HP Smart app allows users to manage HP printers and is usually installed on HP PCs. It's certainly not supposed to appear on PCs that aren't connected to an HP device such as a printer.

The Microsoft Printer Metadata Troubleshooter Tool will rename your printer to its correct name and uninstall the HP Smart app.