problem with Bedwars Reloaded

Hi, I made a bw server yesterday to play with my friends, and I have a problem, I wanted to use banners instead of beds, so I changed the config and also wrote "/bw setgameblock banner", but when I'm looking at the flag and write "/bw settarget" it says this: "You have to target or stand on a block of the configured "game-block" type!" though, as I said, I changed the config and changed the gameblock. And the server is on 1.8.9.

Oh yeah, btw the server is on 1.8.9.

EDIT by Moderator: merged posts, please use the edit button instead of double posting.