The current main logo in el.wikiversity.org (top left) is missing the fourth letter from the end (Η). The correct wording is Βικιεπιστήμιο (in lower case) or ΒΙΚΙΕΠΙΣΤΗΜΙΟ (in upper case), as is used throughout the main page's text, rather than ΒΙΚΙΕΠΙΣΤΜΙΟ as it appears in the currently used logo. This is clearly a typo, which has been pointed out (twice) since 2017. The correct logo is available on Wikimedia Commons, but isn't used. An administrator must configure the use of the correct logo.
If someone wants to try fixing this, please follow https://wikitech.wikimedia.org/wiki/Wikimedia_site_requests and give it a try.