Transmission

I haven't used T in a while Now when I open it the torrent has a message "tracker returned error your acc't is parked see FAQ" but I cant find park(ed) in FAQ. What do I need to do to get T working again? using T 2.92 0n Sierra 10.12.5 Thanks

I Dnld my first torrent (an ebook). It dwld fine. have left it in Transmission 2.84 to seed as required. Looked at Trans Pref. Network says Port Closed.
How do I open it. Using Mac OS Sierra 10.12.3

I Dnld my first torrent (an ebook). It dwld fine. have left it in Transmission 2.84 to seed as required. Looked at Trans Pref. Network says Port Closed.
How do I open it.

Is there any way to change the tracker the torrent uses? I can see Tier 1, Tier 2, Tier 3 trackers under the tracker info, but how does it select them? At the moment, the first tracker has zero seeds so I'd like to switch to the next one, which has more seeds.

What does the lock symbol mean?
Can I toggle % column between graphic and numerical?
Is there a way to see what country peers are located in like Bt Windows does?
TIA,
Beckyt