USoa (uso.kkx.one) vs USoa (uso-archive.surge.sh) same name but different sites?

[decembre]

https://uso.kkx.one (UserStyles.org Archive) https://uso-archive.surge.sh (UserStyles.org Archive)

Same name but 2 different sites ? I am confused.

An explanation?

Note: I refer always to the 2nd: UserStyles.org Archive Because the first one don't work on Waterfox Classic i use and i supposed it was abandoned...