@Rob70 I think there are two options. The first is to contact AirBnB to get their help understanding what's actually going on. Contact Airbnb
The second option is to wait until hour 23 and see if anything has changed. (I suspect it will. The Dashboard seems to have quite a time-lag for many things. For example, it will show me notifications about reviews, etc, long after I've dealt with them.) If, as you approached the 24-hour deadline, nothing has changed, go ahead and decline that apparently duplicate request.