Came here to ask but seing no answer to your post I finally decided to use it
It seems to be the exact same thing as a badge, though it’s not consumed. So … you can basically have a constant supporter buff, but with the number of support tokens we get, it’s not like we would be out of normal badges … I kinda hope there’s another use to it. Anyway it’s not bound to account, even after use, so you can use it to get some achievements and sell it when you’re done.
(Just a detail : you can actually use it again to get rid of the buff. So it’s just a switch “support on/off”. Magnificient.)