I finished the main quest and went in search of the founders. I played and won against 3 of them. Then when I checked the 4th and 5th they wouldn't play me so I went in search of info. Everything I saw said you had to be Master rank to play them and I'm only half way through Veteran. So either this is a bug or someone needs to update their info. The two I couldn't play were the one in Rivenspire and The Author. The other three were playable at veteran rank after finishing the main quest, not sure which or both are required for these three.
Edited by Casdha on June 22, 2022 2:20PM Proud member of the Psijic Order - The first wave - The 0.016%