I suggest you follow this up with the maker of that program on their support page here : https://support.dashlane.com/hc/en-us As this would be their issue.

Please let us know if this solved your issue or if need further assistance.

In the event that the passwords information is lost, you should record all information in a separate text file somewhere else on your hard drive, or written down. You can easily copy and paste if you need to do so. If you are concerned about someone else looking at that file, you can compress it using a password.