I've got an e-commerce site that I'm upgrading. I've upgraded to Craft 3 and can reach the CP and the home page.
This site is tightly integrated with Commerce 1. When I visit the plug-in page, Commerce is listed but "missing". I've attempted to claim the license (using the license number listed on the plug-ins page) but the license number is not recognized.
Do I have any options other than purchasing a complete new license? Is there a way to use Commerce 1 with Craft 3?