Dragunity Deck

Am I dueling wrong?

Dragunity Aklys's effect should trigger when it's sent to the Graveyard (when equipped to a monster), but that's happened numerous times now in various situations (monster destroyed, monster synchro'd, etc.) and Aklys's effect doesn't activate. I've lost a couple of duels because of it.

Also, I had Dragunity Knight Ascalon equipped to Dragunity Arma Leyvaten, and Leyvaten was destroyed, but it didn't give me the option to summon Ascalon, and I lost as a result.

Am I dueling wrong, or are these actual bugs? It'd suck, because I happen to like the Dragunity deck a lot. :p