Error when sending guild invite

[JenDev]

Can anyone explain why I get the following error message when sending an invite. It says max number of members reached, (we have 24 and max is 25 right?) it also says max number of invites (I've never sent any before) how can this be cleared up?

[Orlor]

Depending on the world the max is either 25 or 60 total.

Please contact our support team and they will be able to locate that last invite for you. Details to contact them are in my signature.