### Steps to reproduce
1. Setup the Firefox extension normally.
2. Go to the Passman app in the NC and delete the vault.
3. Delete the account in the settings of the Firefox extension.
### Expected behaviour
That all my credentials would be deleted since I deleted the account.
### Actual behaviour
The credentials remained. I had to reinstall the extension to setup a new vault.
### Configuration
**Operating system**: Windows 10
**Browser**: Firefox
**Extensions that might cause interference**: None.
**Passman version**: 2.1.1
**Extension version**: 2.1.1
**Nextcloud version**: 2.3.5
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