Only one bug I have seen so far is when I connect to cellular instead of wifi, it gets disconnected. But I have found a solution for it. I just connect to a vpn (1.1.1.1 vpn) which provides a ipv4 address too to my network. All this app needs is a ipv4 address to connect to the broker (because sim networks only have ipv6 address ...in my case it's jio). Superb App. Greatly efficient and customisable. Thanku developer