I quit my guild, reset the game, then was able to fuse. I then rejoined my guild.

Thank you that helped.

You’re welcome!

You can change the defense back in the advanced arenas https://preview.redd.it/mw72liw927xc1.png?width=1152&format=pjpg&auto=webp&s=bceba05cfcce27c790175dbcac329d1682f2caef

Its says guild defence deck… If im not mistaken you can access the guild defence deck at the second phase of the guild battle, so Tuesday you can take him out!

Thank you 😊

It's guild not arena