Hi @Neilpang, thanks so much for acme.sh.
I have used it to just issue a cert (nginx).
Everything is working great on desktop and iOS, however, Android Chrome cert is untrusted. The solution as per this topic (On Android 6.0.1 the Certificate is untrusted) is to also serve the fullchain.pem in nginx conf.
I am wondering how to get the fullchain.pem using acme.sh? It seems to have only generated the .csr and .key files.