The bug here is, upon creating a clan, it must be 13 characters or shorter, if not, we'll be unable to create a clan...
Although, what's wrong is, when you create a clan with exactly 13 characters it won't let you join the Clan Chat.


As you can see on the image, I was able to create my clan with exactly 13 characters, yet when I tried to join it back (as seen in the same chat, just before the delete & remake), it was trying to join "Cult Of Zaro" instead of "Cult Of Zaros".

I'm sorry to tell you, but the maximum length is indeed 12 characters. You'll no longer be able to enter longer names as clan names to avoid this confusion in the future. Thanks for the report.