The reason why you can't connect [due to limited peers/bandwidth] multiple process of torrent download/upload ...
stop and remove/delete the torrent [not the file] and re-download here
do a force start/resume ...
Open Options/Preferences - Connection change your port ranging from [6881 - 6889] default ...
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Open Options/Setup Guide - choose the closest location and Run tests to find peers ...
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Last option is to make the torrent Freeleech in order to connect from other peers ... and be patient ...
Soon a connection from peers will establish ...
