There are two versions of the api. A paid and a freemium version. The freemium one is the V2!
If you want to use the freemium version you will have to edit the node_helper.js file in the module directory (MMM-COVID19) and change the rapidapihost entry and the GET URL as well
rapidhost
NEW: “x-rapidapi-host”: “coronavirus-monitor-v2.p.rapidapi.com”,
OLD: “x-rapidapi-host”: “coronavirus-monitor.p.rapidapi.com”,
GET URL
NEW: ‘https://coronavirus-monitor-V2.p.rapidapi.com/coronavirus/cases_by_country.php’
OLD: ‘https://coronavirus-monitor.p.rapidapi.com/coronavirus/worldstat.php’