When I talk in OOC, it doesn’t say (OOC) and how to I disable the prefixes before admin’s names?

That is completely done by an addon you have.

except i have no addons other than m9k and ulx

He meant that the prefixes are controlled by an addon. Perhaps you have something installed with ulx that does that. As for the OOC, that is a setting within DarkRP’s config.

No, it’s not, I fiddled with everything