Thread:KockaAdmiralac/@comment-26443545-20181019154211/@comment-27345308-20181019173306

That sounds like a cookie issue. What they can try doing is:
 * Visiting [ action=purge] on that page and logging in through there. If that doesn't work,
 * Entering incognito mode in their browser and logging in through there. If that works,
 * Clearing their FANDOM cookies and then attempting login again. If that doesn't work,
 * Contacting Staff through Special:Contact/account-issue.