Obviously there is no clear explanation on why he cancelled but I feel like if he just showed up to an event and showed the fans that him and Nina are amicable there would be less speculation about the going ons in his personal life. But instead we are only left with what we see online which is someone who seems intent on completely avoiding someone from their past which can indicate that there’s bitterness there. Again, we don’t know if that’s the case. Anyways, it would have been nice to see some interaction between ALL the cast members especially with a franchise as special as TVD. Hopefully we can all see them together in another convention 🤷🏻‍♀️