FFXIVQuickLauncher VS Penumbra

If he was on trial, he needs to delete the trial installation, and reinstall the game. I had similar issues on Steam. The https://goatcorp.github.io/ is also a great, 3rd party solution and might even be faster than the game launcher.

All i have to say is GL... Firstly, Librem runs on a linux kernel, which is not innately compatiable with FFXIV. There are ways around this, the main way is using the xivquicklauncher 3rd party tool. https://github.com/goatcorp/FFXIVQuickLauncher

The game really is that big, though the launcher does throttle download speeds. If this is less than your usual download speed, then I would consider looking into XIVQuickLauncher, which should be significantly faster. However, if this is a pretty typical download speed, all this would accomplish is restarting your download.

I recommend using the ffxiv quicklauncher instead of official one. I used to have problems with download speeds too but with this it works as good as it should. Not to mention all the other great features it offers https://github.com/goatcorp/FFXIVQuickLauncher

Easiest fix would probably be reinstall. I've used https://github.com/goatcorp/FFXIVQuickLauncher to install in the past as the download speed is much much faster (and ffxiv is huge). You can just use the normal Square launcher afterward if you want, too, but if you're sketch about putting your username/password in a 3rd party app that's understandable.

you need penumbra if you don't have it yet and use that to install the mod

You can find various body edits on https://www.xivmodarchive.com/ . In order to use them, the easiest way is to use the XIVLauncher (https://github.com/goatcorp/FFXIVQuickLauncher) which enables the addon system. With that, download the addon "Penumbra" to use those edited bodies ingame (https://github.com/xivdev/Penumbra).

Runtime loader (Custom clothes, animation): https://github.com/xivdev/Penumbra (a year old)

You'll need Penumbra, which in itself requires Dalamud ala the FFXIVQuickLauncher tool. You can install FFXIVQuickLauncher via an installer and here's a video for installing Penumbra.

Download that, also download textools https://www.ffxiv-textools.net/ OR penumbra https://github.com/xivdev/Penumbra (this one also needs XIVLauncher) and then import the file you downloaded from nexusmods, and that's it.

Penumbra

Penumbra is a quicklauncher plugin (link) that allows you to non-destructively apply mods.

From what I understand that was fixed a few versions ago. https://github.com/xivdev/Penumbra/releases/tag/0.4.6.7

Should be this one I think.