You built it because you wanted to share passwords:

And your flow is: I encrypt my password; I upload the encrypted password to your server.

And I share the password to the encrypted password as plain text.

Why do I have to upload the encrypted password to your server, and not just use signal disapearing messages, or telegram secure channel disappearing messages to share the encrypted password there.

And I can use any other side channel to share the second password, like whatsapp, or regular plain mail.

It feels to me that you made a two step process into a one step process but increased the risk by adding you in the middle.

Why would I offload my trust to you instead of doing the second step?