@Dunc12 Here is my config on MMM-Carousel .

instead of in each modules section. I just have a few that I really need full screen due to my eyesight. Hopefully this helps you figure it out. MMM-CalendarExt and Ext2 have to be on the first line under slides or Carousel has
problems like you are.

modules: [ { module: "MMM-Carousel", config: { transitionInterval: 47000, ignoreModules: [], mode: "slides", slides: [ ["MMM-CalendarExt"], ["MMM-ATM", "clock", "compliments"], ["MMM-BMI", "clock", "compliments"], ["calendar", "clock", "compliments"], ["calendarH", "clock", "compliments"], //["calendarN", "clock", "compliments"], ["calendar_monthly", "clock", "complime$ ["MMM-CloneWarsQuotes", "clock", "compl$ ["MMM-Cocktails"], ["MMM-COVID19", "clock", "compliments"], ["MMM-DailyQuote", "clock", "compliment$ ["MMM-DarkSkyForecast"], ["MMM-Gas", "clock", "compliments"], ["MMM-GmailFeed", "clock", "compliments$ ["MMM-History", "clock", "compliments"], ["MMM-icanhazdadjoke", "clock", "compli$ ["MMM-ImagesPhotos", "clock", "complime$ ["MMM-MyWordOfTheDay", "clock", "compli$ ["MMM-Parcel", "clock", "compliments"], ["MMM-quote-of-the-day", "clock", "comp$ ["MMM-rfacts", "clock", "compliments"], ["MMM-SimpleLogo", "clock", "compliment$ ["MMM-SugarValue", "clock", "compliment$ ["on-this-day", "clock", "compliments"], ["random_quotes", "clock", "compliments$ ] } },