Syncing has stopped with WD MY Cloud

I set up WD syncing on this W10 PC some time ago and have realised it hasn’t sync’d for several months.
Clicking the WD Icon there is a message saying ‘WDMyCloud’ is missing. I can’t determine exactly what this means,
The connection to the WD device is OK, Firefox brings up the WD control panel through the IP address.
Any advice would be welcome

@Irene-Lancaster

Are you sure you own an My Cloud Home? If not an MCH, then what WD device do you own?

User Manual: My Cloud Home and My Cloud Home Duo (westerndigital.com)