How can I change the default language for users? I changed the language to Turkish in WHM but it only changed the language of the admin section. In cpanel users have to go to settings and change it themselves.
Sir if you have chosen a language in Softaculous Admin Panel then all the new users will take that language as default but for the existing users you will have to change manually.
In such case Softaculous will take the language that you have set in the Softaculous Admin Panel.
Can you please open a support ticket with the WHM details of a test server. We will check it and let you know the solution.
http://www.softaculous.com/support