The devs should better take a look at this link:
https://chainz.cryptoid.info/bsd/That's the only block explorer I know for bsd and they are about to take it down. The project looks like its abandoned tbh. No news, no development, no word from the devs...
That's really worrying. That one is the only bsd explorer I know too.
I will write a pm to limx dev just to be sure he see this expiration problem. I hope it could be fixed, as a coin explorer is really needed and this one is also reported on bsd official site.