Greasy Fork is available in English.
a free and purely cosmetic script that lets you use custom skins during games, it even lets you make your own skins!
< Feedback on Free Custom Surviv.io Skins and Mods (FREE SURVIV GOLD PASS #11)
Still working for me.
Try reinstalling the script to see if that will help.
It got patched! PLEASE FIX IT