WDSync is missing

Newby to this forum. Hi everyone. Just upgraded to 4x WD Red 6tb drives in a Raid 5 config in an EX4100. Installed all the utilities and setup WDSync as per the instructions. Set to transferring all my MP3s Docs etc. All went well until about halfway through when syncing stopped and I get a WD App Manager Notification stating that I have a missing share. Specifically ‘The share ‘WDSync’ on ‘WDMyCloud EX4100’ has been deleted. Either re-create the share or remove all sync folder pairs using this share.’ I have to admit I’m totally perplexed! Can anybody help?