These are desperate times and certain measures needs to be taken to ensure life is protected at all costs, in respect to that I believe the participants who are meant to be in that conference will understand, I even see it that they will be happy. For  manufacturers, it will be a hard time but the best option had to be taken; therefore in general it affected crypto badly because there was a huge dump in the market. But recently things are returning gradually both in the crypto space and in certain countries who are relaxing their lockdown, thus crypto is regaining its healthy state once again.