This is a good place to remind people to check if you can register as a donor in general.
In Germany, DKMS will send you a DIY swabbing kit for free, so it really just takes 10 minutes to register: https://www.dkms.de/registrieren
I’m sure other countries have similar systems in place, because fuck cancer.
There’s a semantic difference between “supporting mods” and “provide support for modded installations”. The former is fairly common and is what steam workshop is about and is what you are talking about.
The latter is basically unheard of (for what I hope are obvious reasons).
The OP is a bit ambiguous about which of the two or is.