Last week we discovered an issue with Nexon Launcher, which we quickly resolved. However, if you are still experiencing this issue, please follow the steps below.
1) Open up a Windows Explorer window.
2) In the Address Bar, enter or paste the following: %localappdata%\NexonLauncher
3) Delete all folders & files located within the location provided in step 2.
4) Restart the launcher, or run the launcher if it is not already active.
The issue should be resolved once the steps above have been followed. If you still encounter the issue, please open a ticket by clicking on "Submit a request" at the top of this page.