Valaraukar Okama I had the same problem. Try this EVE launcher login window not displaying correctly
It says that you will have to re-add your characters, however I found if I didn’t delete the folder ‘QtWebEngine’ it fixed the problem and I didn’t have to re-add my accounts.
Also instead of deleting folders, I find it is better to rename the folders so you can put them back if it doesn’t help.