MyCloud autoremove

That is the wrong unbricking guide for a My Cloud, the link in your post goes to a My Book Live unbricking post which is a different WD drive and may have different unbricking procedures and use different files for the unbricking process.

Use the link from Mefistos post: https://community.wd.com/t/how-to-unbrick-a-totally-dead-wd-my-cloud/91064