Mac – Cannot mount encrypted Time Machine

disk-utilityencryptionhard drivepasswordtime-machine

I've an encrypted Time Machine with the password saved on the keychain.
Now, trying to plug in, it ask me the password and it's always wrong.
I've checked hundreds of times and it also allowed me to change the password, but the disk won't mount.

I've tried to verify and then repair the disk from Disk Utility,
but after verified it shows me this message:

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I can I solve this?

Update:

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Update 2:

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Best Answer

I've solved this way... https://beshoy.girgis.us/2013/11/solved-error-disk-utility-cant-repair-disk-backup-many-files-possible/

Tried multiple times to repair the disk...