WD MyBook locked itself, doesnt show up

Another issue with a external hdd that locked itself. I´ve never put a password on it, so something else must have.
I have had it connected to Backblaze, could that service create such error on the hdd?

Hello kali,

If you have used WD SmartWare or drive is showing with DVD image icon named “Drive Unlocker” while connecting and don’t know the password, then it is required to erase the drive for further use in computer. You can refer below article for more details about this.