@ezgidir mobilere: You need to enable Private Messaging. This is in the "Edit Options" of the control panel. If this isn't there, it has to be added somehow. You can try posting in
https://www.mobileread.com/forums/sh...d.php?t=319819 to ask it to be enabled, or contact a moderator.
But, what do you mean by "soft reset" and "hard reset". Neither of these are terms usually used with the Kobo devices, so I don't know what it is you actually did. Was one of these a factory reset?