Huhh…
How old is you MineOS installation?
In the top corner (hvere the user name is) there is a small downwards pointing arrow. Press that one and check your commit, and then try pressing “Refresh profile list”.
You may need to upgrade your MineOS to a newer commit, but refreshing profile list should get all the current server versions.
Take a look at the following thread: Megathread for MineOS webui issues
And here is how to update the WebUI: https://minecraft.codeemo.com/mineoswiki/index.php?title=Updating_the_Webui
(and to update the WebUI you need to use root ;D)