https://www.hostarmada.com/blog/google-safe-browsing-and-google-blocklist/

As some of you may have seen, Google is reporting Nomagic password management service as a malevolent website, and some collateral damage was reported by some members to access our webmail as well.

We highly suspect that this is because of Vaultwarden, even though it's totally wrong of Google to react as such, without even an informational email to our abuse email address.

So far the best course of action is to flag this back to Google as an error.