Hi there,
Thank you for getting in touch with us, we do appreciate your time.
I have taken a look at your map and it appears that you may have multiple markers in the same location, possibly duplicates which would explain why the cluster says example ‘4’, however, only ‘1’ marker is seen. This is because there are 4 markers in that location, however, they are stacked and thus it appears as 1.
With that said, please may you confirm if there are duplicates and if the duplicates are supposed to be there?
Kindest Regards,
Matthew