Family have all disappeared from flight home!

Really hoping someone can help. We are currently on holiday in Florida, having flown out with virgin via Atlanta in economy delight. We booked direct with virgin 6 months ago and all went fine coming out.
We are due to fly home in UC in 10 days time on the Tampa - JFK - LHR route. I’ve just checked our return flight on the virgin and delta apps and on both websites. All other 4 members of my family (husband, children and father in law) have disappeared from the booking! The only person left on there is me and I am still booked onto both legs of the journey. Should I be panicking? Is there a chance that the rest of the family have been bumped off the flight? I have noticed that the plane has changed since last week and has less UC seats - could this be a factor? Would they really bump 4 members of a family and leave one on the flight?
Any advice would be gratefully received so that I am prepared when I call them in the morning.
Thanks so much!
We are due to fly home in UC in 10 days time on the Tampa - JFK - LHR route. I’ve just checked our return flight on the virgin and delta apps and on both websites. All other 4 members of my family (husband, children and father in law) have disappeared from the booking! The only person left on there is me and I am still booked onto both legs of the journey. Should I be panicking? Is there a chance that the rest of the family have been bumped off the flight? I have noticed that the plane has changed since last week and has less UC seats - could this be a factor? Would they really bump 4 members of a family and leave one on the flight?
Any advice would be gratefully received so that I am prepared when I call them in the morning.
Thanks so much!