I don't think most developers care about the flashiness of the website, and in some cases I think it's off-putting. Like the sandwich menu, that could (should) be a menu across the top of the screen. You've got that (massive and wasteful) bar up there with nothing on it except a logo and a sandwich menu, and then when you use the menu it takes up as much vertical space as possible (the entire screen, plus some). That means it was designed solely for phones, and that turns me off for reasons I'm struggling to put into words. Like it's not in the right "realm" of software.

Is it even open source? I noticed you have a GitHub, but all the things on your GitHub are only tangentially related to the main program. Just a bunch of CI/CD stuff and whatnot. I might be wrong, but I can't see any way in heck a bunch of developers are going to choose a proprietary password manager. This alone makes me think you've totally locked your product out of this demographic.

Overall I get a product vibe from it. Makes me feel like it's designed to generate profits for a company, I mean you even have a customer testimonials page for crying out loud! I'm pretty sure everyone has realized by now that customer testimonials are just a bunch of brainwashing bullshit, and nobody with an IQ over 7 would fall for them. The security page, which literally has a heading that says "security productized", seals the deal for me, I'm too scared to try it now.

Speaking of security, it doesn't mention whether it's self-hosted or a cloud platform (or maybe I just missed it). Personally, and a lot of other devs are like this too, I absolutely refuse to use a security service that's hosted on the cloud. A password manager should always allow storing locally without any cloud shenanigans.