Can't claim guild ownership

Hi, I’m the guildmaster of the guild Extra on Draenor (Horde@EU) I can’t seem to claim ownership of my guild, I can’t access the code anywhere, I wasn’t the original founder of the guild but I checked in with the original GM as well and he couldn’t claim it, according to warcraftlogs im rank 0, so I should be able to claim it? We’ve both checked our emails and we don’t have anything of the sort. Under our guild I can’t see the settings.

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