The answer is a bit more patience
Most torrent clients prioritize
- downloads
- seeding
- other tasks, including responding to new clients
Further clients give higher priority to clients that
- have given data
- can give data
This means it can take some time before you get a complete block (for the Triga torrent the block size is 4mb).
As soon you have some blocks complete you can seed to other downloaders and climb up the priority ladder.
The torrent is still free leech, so give it a try. Give the things you want higher priority in your client. Make sure to stop when freeleech ends not to ruin your ratio.