To be the "administrator" doesn't give you the right to delete the work of others. A wiki is a collective activity not your private domain. I gave this site free hours of work but it's not acceptable for you?
The material that you uploaded is copyrighted by Wizard of the Coast. Above this, you made a patreon to receive money for this fandom! It's clearly not very honorable. I hope you'll be more reasonable with other people's creativity. Until then I'll surely not cooperate anymore.