It will tell you which platforms are supported on the right side of the page for downloading the trainer. underneath game version, it will say "Distribution:" This is only working so far for ubisoft's own launcher, and their ubisoft + subscription (which is well ****ing worth it, getting access to their entire first party library, such as AC:Valhalla or Watch Dogs: Legion as an example. You can request a new platform to add it to epic or steam, if they aren't already planning that? (i'm not certain if they prepare multiple platforms as a default, or wait for only requests to come in)
I'm certain it will get voted for damn near immediately with how large the epic or steam platform is but yeah that's how you do that.
[Edited by kharaa, 10/6/2021 11:34:50 PM]