Can a hotspot link to my shop or show a Buy button?

Yes, in two ways. On the Hotspots tab, click Add Infotation, click the picture where the badge should sit and, in Hotspot Properties, set Variant to External Web Link. Put your shop address in Target URL, starting with https://. A click on the badge opens it in a new tab.

For a product, choose E-Commerce Product instead (an Advanced view variant). Its window shows the hotspot's picture, description and Price, and a Buy Now button that opens your Checkout URL in a new tab. The words Buy Now are fixed, and without a checkout address there is no button.

Panoramr takes no payment and does not count clicks on these buttons. The Top nav bar – multi menu can also carry one call-to-action button, set in the Advanced view. Add a call-to-action button to a tour compares the three.