The HYPER block explorer over on TheCryptoChat has been migrated to its own dedicated server. The IP needs time to propogate so it will take it a little while to come online but when it does pop in the explorer should be up to date and ready to go.
The block explorer url will remain the same,
http://hyper.thecryptochat.net/https://novaexchange.com is closed since April 1, 2018. To me the letter from them came. I cannot come in the account. Mistake 400. It is good that I do not hold means there.
I was told Nova sold to new owners and that they are in the process of upgrading the servers or code or something. Not sure when or if they will be back online but we shall see.