CANNOT LOAD THE SAVE GAME GENERATED BY THE SITE

Firstly , great work on the site. The design is fantastic.

Unfortunately, I tried loading the d2s file saved by the site, by replacing the one saved by the game "Assassin.d2s" in "Saved Games/Diablo II Resurrected/" and the game is not detecting my hero anymore. It doesn't show any heroes when I run the game. My hero name (saved by the game) is also "Assassin" and the save file the game created is "Assassin.d2s".

Anyway to fix this?