My Cloud not access File&Folder via Website

Currently, I am using model PR4100. I can access the file on my local computer and the app on my phone, but when I access it through the os5.mycloud.com website, I get an error like the picture.
All files and folders are not displayed with the error saying “Unexpected error occurred - Unexpected error occurred. Please try again later.”.
So how do I fix it?

Note there is a specific subforum for the My Cloud PR Series where users more familiar with that device may be able to assist.

OS5 My Cloud Pro Series
https://community.wd.com/c/os5/my-cloud-pro-series/256

Basic troubleshooting steps when having remote access/cloud access problems:

  • Reboot the My Cloud device.
  • Disable Cloud Access through the My Cloud Dashboard, wait five to ten minutes, then reenable Cloud Access. Sometimes that clears access issues.
  • One may have an “indexing” issue. One may need to disable and reenable the indexing service.

Some WD Knowledge Base Articles on “Indexing” that may be relevant:

My Cloud OS 5: Best Practice for Cloud Access and Indexing
https://support-en.wd.com/app/answers/detailweb/a_id/30014

My Cloud OS 5: Disable and Enable Indexing and Media Services
https://support-en.wd.com/app/answers/detailweb/a_id/29819

Best Practice for WD Cloud OS 5 Cloud Access and Indexing
https://support-en.wd.com/app/answers/detailweb/a_id/30183

My Cloud OS 5: User Share Cloud Access and Indexing
https://support-en.wd.com/app/answers/detailweb/a_id/29223

Have you opened a Support Case? If not opened, for more information, please contact the WD Technical Support team for the best assistance and troubleshooting:
https://support-en.wd.com/app/ask 1

I have tried but no success.
I still get the above error for all existing accounts (including admin accounts)