[PrO.GameR]

And? what do you want us to do? Magically mod their PC so they'll see same as yours? You have some GTA V mod replacing GTA SA's font files, this is why you should always develop on a vanilla GTA SA, afterall most of the players will be using the vanilla version with a couple mods tops.
Remove your mods, edit the signature to your desire, then re-install your mods so they won't look ugly for those who haven't moded theirs.

PS: Mind telling us what you used to make those polygons?