I've talked with Alex, he is unfortunately not a part of the project anymore. I've asked will the block explorer be shut down and this is his answer:
I haven't decided on how to do the transition for the block explorer yet. For now I will make sure it keeps running correctly, I will just not add functions or correct minor bugs anymore.
I will do the same for other services I am running such as the dns seed servers. I am shutting down the Iquidus BX and testnet one though.
Going further I would advise people to use
http://explorer.biblepay.org:3001/ as the main explorer.