Folders in vault are inaccessible

Downloaded the desktop app and linked to my existing vault. I can now no longer open any of the folders in my IOS version and vault is empty on desktop even though there is space allocated. Please help!

Please check if the sync of the vault files to your desctop complete, means all vault files have to be available local.
Please have a look into the log file if there are any WARN or ERROR Messages.
Please read this: Empty Vault, but still allocates Space