Hi, I have recently set up FileMaker Cloud for a client with 10 users, all using FileMaker 16. They keep getting the 'A connection to FileMaker Server is required' authentication box popping up intermittently. Sometimes when they first open FileMaker, other times when they're in the middle of using it. They're all accessing the files via the host tab so that should authenticate the client software as far as I know? They've also saved the credentials to Keychain but every time the box pops up the credentials are empty. Does anyone know what could cause this? The staff don't have the credentials for the cloud server so every time this happens they lose access.