My right thigh texture isn't showing ingame, but its uploaded in the shop.
How can I get it to show again?

Start the game, go into single player & wait a few minutes, 3.6 will automatically download your textures if you leave the game alone.

It's still not showing up

Downloading fine for me.

Try /dl thresher

You'll have to wait a few minutes before doing that though so the game has time to finish updating.

It works now. Thanks

thats happening to me but its my right bicep and i tried /dl cocacobra and its not working

If so, delete the folder called cocacobra from the custom folder of TB. It will download it again and hopefully it will fix it.