Only export markers in a specified area not whole map

I am using umap and trying to export the coordinates and description of markers within a certain area and not the include the markers that are outside that area. I have tried drawing a polygon around the markers I want but when I download I get ALL the markers.

This is the data I get which is perfect I just need it only for the area of the polygon


What do I need to do please?

Thanks in advance.

Have you already tried any communication channel listed

at ?

You could use this to cut out a portion of the data