I managed to get it back up and working with quite a bit of elbow grease, and the help of my raspberry pi with a 3.5" HDD adapter. It’ll involve you taking apart the WD MyCloud, and in my case, I had to reformat it too.
You can check out the thread I followed here, WD MyCloud Stuck in safe Mode - #20 by ronaldyeojz. I had to google translate some of the parts but do look out for the commands portion as google translate will mess those up.
I hope this helps! Good luck!
