Works fine, looks bad. Is there something I need to do, to define the text for these labels?
Go to the /system/admin/plugins/tipoftheday?
edit (or create) the tipoftheday_en.properties and all the other translation files, for example tipoftheday_de.properties for german translation, directly in this directory
If you have to create it, than you might have a subdirectory called "translation/en/". Take the corresponding tipoftheday.lang.php file and copy the content to the newly created tipoftheday_en.properties
It should be ok now.