I can figure out how to use them, they appear in a tab under the characters but I am unable to use them on my characters.
Ideas
Do you have any yet? There's one at the end of the episode track. Bronze for ftp, silver for p2w. I'm unsure how you get them otherwise. I do see what you mean though, it does appear like we were gifted on of each, gratis.
That’s probably right, I just naturally assumed they were free since you could se them in your inventory