Bluffton South Carolina not in CItyStrides

I did some runs in Bluffton SC in July and can’t seem to figure out how to add that city to CityStrides. I checked OSM and the boundaries for the city seem a little funky. The runs I did appear to be just outside of the boundaries of Bluffton.
I did add the city to a spreadsheet that I found in this forum but cannot seem to find that data anymore.

Here is a run that I did

Any tips on how to proceed? I ran a few times down there and would love that info added. Thanks!