OK, so I solved my own issue.
For those who still have this issue, here is what I did to fix it.
I opened Activity Monitor and there were two processes labelled WD Drive Manager Status Menu. Quite them both.
Go to the boot drive and go Library/Application Support/WesternDigital
when I looked in this directory there were a number of files, and another directory labelled WDDriveManager.
I deleted them all and re-installed as I wasn’t sure which were the right files. This worked!
Once re-installed, I had the WDDriveManager folder, but no other files in here. Therefore, deleting everying in the WesternDigital directory except for WDDriveManager may work.
Hope this helps others with this issue.
