The problem D-Gaurd solves

When you use a password manager or any other vault app, you store your data on a specific location (local or private cloud) this have some critical problems. your important data is centralized, meaning that whoever controls the location controls the content. The controller can change the content, completely replace it, or just take it away.
That makes your data vulnerable to attacks, exploitation, and loss.

This makes centralized storage [local or remote] not optimal for storing important data, each has it's downsides

Remote or Cloud: Denied access to data or data deletion because of billing issues or even policy changes or what ever the service provider says, **You're completely reliant on who is holding your data

Local: Vulnerable to hacks, MITM attacks or just accidental data lose

Challenges we ran into

We have only one rule we stick to (the user must own his data & we can't have access to it in any way). There is no trusted way to make sure all my data are unavailable for any cloud provider, but IPFS is completely decentralized and the data stored securely. we also struggled to find a fast IPFS service provider, but we found one in the end