I found the encryption really cumbersome. Like I just downloaded the app and its asking me to authorize my account from another Matrix client that I've previous

I found the encryption really cumbersome. Like I just downloaded the app and its asking me to authorize my account from another Matrix client that I've previously signed into or I won't be able to read encrypted messages people send me. But I'm pretty sure I uninstalled those other clients so idk what to do there. Also I've previously had the Android app crash and throw Java stack traces, but that was an older version.