Download the .mulib file from https://adobe.ly/2jhRZIZ.
Read this article to resolve issues with Accordion widgets when viewed in Google Chrome running on Android OS.
When you visit your published site, Accordion widgets having “Can Close All” option enabled, collapse immediately after touch action.
This issue is specifically seen in Google Chrome version 55.0.2883.91, running on Android OS.
Open the downloaded file in Adobe Muse by double clicking on it.
The downloaded file will be added as a library item in Adobe Muse.
Drag this library file on your master page or a child page, depending on where you experience the accordion issue.
When you drag the file, ensure that the file does not overlap with any other page, content frame.
Re-export and publish the website again.