The following article describes some issues that may arise during the localization process. If your problem is not described here, contact CKEditor project maintainers to get support.
How to report disruptive team members, abuse, and vandalism
If you feel that there is a member of your team who is abusing the CKEditor localization project in any way, please report him or her to the project maintainers.
Resource was not locked after downloading it for translation
You can lock the resource manually by selecting the Lock this translation to notify others you're working with it. option in the Translation Details dialog window.
Lock file option in Transifex
Do not forget to unlock the translation when you are done with your work.