How to show other language link in menu while hiding current language+vice versa

How do you only show the OTHER language in menu (No sub menu) and when you click on the other language it switches to the other language, while the WPGlobus menu link changes back to the opposing language.

Such as ONLY the “Chinese” menu link will show on English page (Pages are in English), and when you click on “Chinese” (Pages are now in Chinese), but the language link displayed on menu now becomes “English” link.

Reference: https://www.wpglobus.com (Shows the OTHER language in menu, NOT CURRENT, no dropdown)

The following code does not work (It only hides the entire language switcher):

.wpglobus-current-language {
   display:none;
}

Review site: https://crystalmassagecenter.gracecomputerinternet.org
(Currently shows current language and dropdown of other language)