MentalEdge

It should just be a matter of forwarding the righ subpath in your reverse proxy.

There should be a page for most reverse proxy setups in the jellyfin docs.

SyncPlay.

It’s a people icon in the top right in most clients that support it.

Users can set up a group, and other users can then see and join that group. Any media played in the group is played on all clients in the group.

Two people with no game, still means there’s no game.

Zero plus zero is still zero.

No.

By inflating his own playcounts, the value of each play goes down. All that money he got? Came straight out of the pockets of real artists.