Insight is quite a challenging or rather problematic block explorer to set up.

In the the newer versions of bitcore it's even more unclear where to go to re-configure it to match your coin's properties if you already managed to change it from SHA to whatever algo your coin uses.

Those using older insight/insight-api/bitcore versions which were easier to configure, will notice that Insight runs no longer than 15 minutes before losing its connections to the insight api/bitcore due to a memory leak, stalling the Node process and ultimately clogging up the whole server if not restarted right after the 'crash'. I guess it's doable with enough resources, time and effort. The Reddcoin and Startcoin team managed to get it done. Startcoin crowdfunded the conversion to X11 POW for START on Startjoin to get a pro do it for them. I don't know about Reddcoin's team though.

Furthermore, Bitpay ignores every single "issue" on Github or question asked on their Labs forum if you even dare to include the word altcoin or a subject that is something else than Bitcoin concerning their products. I'm waiting for over a month now concerning this memory leak. They don't even take 5 seconds to tell you to fuck off with your altcoin. Nothing. I find this quite disrespectful. You are free to choose not to support users who use your product in a different way than intended, but at least have the decency to write a statement about it and put it on the website or the fine print at the bottom: "We do not support altcoins". Is that too difficult?

Until they embrace altcoins or that a skilled developer decides to build a universal block explorer, Abe is basically the only accessible block explorer we have.