New launcher update was deployed to day that should hopefully resolve most of the issues in this thread. If the launcher does not self update then I suggest you reinstall it.
For login issue with authentication key, there is a possible fix on the beta version we are working on. Try changing your launcher version to beta.
- Start the launcher
- Click on the EVE icon in the top right corner of the launcher.
- Select Settings from the drop down list.
- Change version type from Release to Beta.
- Click on OK.
- Exit the launcher.
- Press and hold the Windows key on your keyboard while pressing R
- Copy and paste the following into the text box and press Enter: %LocalAppData%\CCP\EVE\
- Right click on the folder cache and select delete.
- Close the File Explorer and restart the launcher and you should be all set.