Font Weights Keep Trying to overwrite each other in windows

So I’m having a few people “test” a new font before I release it out in the wild. It opens fine for me and another person both using Mac Fontbook. I sent it to someone who uses windows and he’s saying the files keep trying to overwrite each other whenever he installs. Sorry if this is a pretty basic thing I was thinking it could be file naming or something?

This is my first time ever creating a font with multiple weights.

File naming looks like this, thanks for any help!