How can I use everything I have in my app (Android) on Linux (snap)?

I don’t really know my way around AuthPass even though I like it very much. I’d like to access the same database on my PC as the one I have in my phone. How could I do this?

I have no idea how I’m logging in, I don’t know what the three big blue buttons do (AuthPass Cloud, Load from…, Create New File), I access my passwords from “Last opened files:”, I enter a password, and there I am.

Could I get some help please?