How can I edit title of old thread?

[Kole0]

Hello,
I have thread that is couple months old that I keep refreshing(gold selling service).
I would like to keep the thread open to post my listings there, however since the title is a lil bit outdated, I would like to edit it, but there is no option to edit the thread available for me.

 

[The Integrity]

Members have an edit time of 1 month, meaning that you cannot edit threads once they are more than a month old.
You can increase this limit by upgrading your account to Epic Member or buying the "unlimited edit time" item from the shop.