What if I lose my unlock key?

You can recover your unlock key by using the "Forgot Unlock Key" feature.

Is it possible to share my encrypted files with someone else?

Yes, you can share your encrypted files with anyone by uploading them to a cloud storage service such as Google Drive or Dropbox. You can create an account on these services and share your encrypted files by sending an invitation to the recipient. If they accept your invitation, they will have access to those files until they expire or until you remove them from your account.