I just got IPTV express and am using STBEmu on my Xiaomi mi box. Everything is working great and I'm very happy. I'm interested in getting another mi box for my basement and putting STBEmu on that as well. Can I use the same virtual mac address on both boxes to watch IPTV on both (as long as only one is running). Or will I register a different virtual MAC address (and essential pay for a whole other subscription?)
Yes. As long as only one portal is active at a time its fine. If you want to watch simultaneously you will need a second subscription and to register a different MAC address.