What happened to the apps in my Wix Mobile Editor?
When moving from your Desktop Editor to your Mobile Editor, third-party apps that are not mobile-ready will be hidden automatically. These apps have not yet been optimized for mobile and therefore will not display correctly on your mobile site.
To add any of these apps back to your site: From the left side of the Mobile Editor, click the Add icon > click Hidden Items > click the eye icon next to the relevant element.
Note: The apps which have been optimized for mobile sites can be found under the Mobile Optimized section of the Wix App Market.