I can't add any of my shared folder whithin Jellyfin or plex or any other apps
folders are invisible

Need some help, thanks
Please try restarting your device to see if that resolves the issue. If no folders are still displayed, please share screenshots of the storage pool and volume pages to help us pinpoint the problem.
Following an upgrade to TOS 7, a permission conversion procedure may be required. If this conversion has not been carried out, we recommend that you reconfigure the applicable permissions as needed.