Connectability is determined by the trackers taking a RANDOM single torrent that you are registered as seeding to site. YOU can be connectable on some and non connectable on others, thats just the way torrents work.

NONE of us will connectable ALL of the time on ALL of our torrents.

The easiest method to check if you are connectable ON THE WHOLE is to look at your profile.

You could use a connectability checker or port checker and there is one on site.

So... if you receive a PM saying you are NON CONNECTABLE check your profile OR check your port here:

Code:
https://www.twilightsdreams.com/testport.php
Remeber, the tracker is only looking at ONE RANDOM torrent you are seeding when the pms are generated.

Hope that makes sense and alleviates any concerns over connectability.