Sorry - not been on here for a while - yes i now have my unit hooked up and running with Modbus - can still use the local WIFI app to monitor it - but all my control is done in my Node Red System using Modbus through a Multiport RS485 to TCP/IP converter.
Good thread here if you want to do it in ESPHome/HA
I use Node Red for all of my Home Automation and directly control it through this.