The voice chat isn’t activated on my kids account as hés clearly too young. I didn’t have anything to do to disable it, but I wouldn’t feel comfortable if he wasn’t playing Roblox in the luving room where I can see what hés playing.
Also he loves it when I watch him play so we get to share and discuss a lot about the games he plays.
I guess Roblox is a game where you have to have good parenting behind.
I use Joplin through some WebDAV with my cloud provider, kDrive.
Works perfectly once set up.
I don’t know if you could make it work directly from your phone to your computer though.