IOS 8.4 unable do change default boxes DRAFTS, SENT, TRASH and ARCHIVE. It don´t save the charges!

After upgrade to IOS 8.4 the system set the default boxes, DRAFTS, SENT, TRASH and ARCHIVE to local storage in my iPad. But i usualy use this boxes in my MAIL provider (HOSTGATOR). When a change the boxes to my options, it don´t save the changes. Wen i go out the configurations box and come back it is the same before.

How can i solve this? Maybe another upgrade to solve this problem???

Att

Júlio