Hey, so I tried to talk with Dutchs and he tried to help me so much but it seems the problem is deeper.

In my server, in some reason, the Nether won't generate at all!
It came like void on an obsidian platforms.
Nothing around.
I tried to copy files from SP and it was loaded at MP, but won't generate more than it generate from the SP.

I spoke to the hosting company, the files are taking from the Curseforge site itself so all original.

Hope it will finally fixed.